# Nanoc news

## 4.12.14 (2022-12-03)

Fixes:

- Fixed an issue which would cause `Invalid argument @ io_write` on larger sites (#1636)

Enhancements:

- Made Nanoc store temporary data (in `tmp/nanoc/`) in compressed form (#1637)

## 4.12.13 (2022-11-30)

Fixes:

- Prevented an issue where items could have two leading slashes in their identifier when using the `filesystem` data source’s `extra_files` option (#1622)
- Fixed an issue which would make `nanoc compile --watch` or `nanoc live` crash if the layouts directory does not exist (#1625, #1626)
- Fixed the usage of the `show-rules` command (it takes no arguments) (#1628)
- Fixed an issue which could make Nanoc crash with `Stopwatch::AlreadyRunningError` (#1631, #1633)

## 4.12.12 (2022-11-15)

Fixes:

- Fixed a bug that could incorrectly raise compilation dependency cycle errors (#1620)

## 4.12.11 (2022-11-12)

Enhancements:

- Further improved compilation speed, especially for partial recompilation (#1609, #1612, #1613, #1615)

## 4.12.10 (2022-10-18)

Enhancements:

- Improved compilation speed, especially for partial recompilation (#1602, #1603, #1604)

## 4.12.9 (2022-10-08)

Fixes:

- Fixed compatibility with Haml 6.0 (#1595, #1593)

## 4.12.8 (2022-10-03)

Fixes:

- Fixed incorrect documentation regarding the IP addresses that the `live` and `view` commands listen on (#1584, #1585)

Enhancements:

- Wrapped URLs printed to stdout in angular brackets (like `<http://…>`) so terminals can detect them properly (#1589) [Daniel Aleksandersen]
- Made various performance improvements (#1596, #1597, #1598)

## 4.12.7 (2022-06-06)

Fixes:

- Dropped support for incompatible Psych versions (#1577, #1583)

Enhancements:

- Replaced UglifyJS (unmaintained) with Terser (#1578, #1579)
- Dropped support for Ruby 2.6 (EOL) (#1580)

## 4.12.6 (2022-05-28)

Fixes:

- Fixed a crash in `nanc view` when a TUN device is present (#1567) [Sergio Durigan Junior]
- Fixed a crash when content/ has non-writable binary files (#1576)
- Fixed inconsistency in allowed YAML classes in metadata (#1574) [Daniel Aleksandersen]

## 4.12.5 (2022-01-22)

Fixes:

- Prefer YAML.safe_load over YAML.load (#1566)

Enhancements:

- Added `Time` to the list of permitted classes for YAML (#1565) [Hideaki Nagamine]

## 4.12.4 (2022-01-15)

Fixes:

- Fixed “can’t be called from trap context” exception (#1559, #1564)

Enhancements:

- Added `Date` to the list of permitted classes for YAML (#1560) [Damien Mathieu]
- Made Nanoc log the filename when it is not absolute (#1557) [Johnny Willemsen]

## 4.12.3 (2021-10-09)

Fixes:

- Switched ERB to use keyword arguments (#1547, #1550) [Daniel Aleksandersen]
- Removed use_helper re-definition warning (#1548, #1553) [Daniel Aleksandersen]
- Fixed issue which could cause items not to be recalculated when removing items in the preprocess block (#1554, #1555)
- Dropped Nokogumbo in favor of Nokogiri (#1546, #1549) [Daniel Aleksandersen]

## 4.12.2 (2021-05-28)

Enhancements:

- Add support for `video/@poster` to relativize_paths (#1544) [Masayuki Higashino]

## 4.12.1 (2021-04-05)

Enhancements:

- Made Nanoc expand paths containing `~` (home directory) in the filesystem data source configuration (!4, !5, !6)

## 4.12.0 (2021-02-20)

Features:

- Added `-W`/`--watch` flag to the `compile` command (requires the `nanoc-live` gem)

Enhancements:

- Made the compiler cache binary items

## 4.11.23 (2021-01-16)

Fixes:

- Fixed issue which could cause nanoc-live to keep running and use 100% CPU (#1538)

## 4.11.22 (2021-01-01)

Changes:

- Dropped support for Ruby 2.4 (EOL)

Fixes:

- Added support for Ruby 3.0

## 4.11.21 (2020-12-18)

Fixes:

- Made clonefile usage optional

You can add `clonefile` to your Gemfile to let Nanoc make use of your filesystem’s copy-on-write functionality (if available), which is not only faster but also more space-efficient. In the previous release, 4.11.20, clonefile was mandatory, even though it won’t properly compile on older operating systems.

## 4.11.20 (2020-12-18)

Enhancements:

- Made Nanoc use copy-on-write when available (preferred over hardlinking/copying) (#1509, #1511) [Daniel Aleksandersen]

## 4.11.19 (2020-10-16)

Fixes:

- Fixed an issue which could cause compiled pages to contain the content of another page (#1501, #1510)

## 4.11.18 (2020-06-17)

Fixes:

- Fixed a `Encoding::CompatibilityError` that would be thrown e.g. when using the `contracts` library (#1502, #1505) [Ethan Crawford]
- Fixed an issue which could cause Nanoc not to compile all items on Ruby 2.7 (#1501, #1507)

## 4.11.17 (2020-06-12)

Fixes:

- Fixed issue which could cause Nanoc to throw a timeout exception (#1503)

## 4.11.16 (2020-04-26)

Fixes:

- Fixed uninitialized constant/undefined method bug with guard-nanoc (#1494, #1495)
- Removed remaining more “Using the last argument …” warnings (#1498)

Enhancements:

- Ignore redirects to self (misued for cookies) (#1496) [Daniel Aleksandersen]

## 4.11.15 (2020-03-07)

Enhancements:

- Made `prune` print files to delete when using dry run (#1474, #1476)
- Made Nanoc emit a warning when the `contracts` library is loaded, as it can cause severe slowdowns (#1483, #1489)
- Made the default Rules handle `index.*` files (#1485, #1490)

Fixes:

- Fixed warnings on Ruby 2.7
- Made `@rep` (not just `@item_rep`) available in the Rendering helper (#1484, #1488)
- Made the `:relativize_paths` filter relativize the `value` attribute, not the `content` one, of the `param` HTML element (#1491)
- Made the `:relativize_paths` filter support relativizing paths in `srcset` attributes (#1475, #1492)
- Fixed an issue that could cause items to be marked as outdated when they shouldn’t be (#1471, #1493).

## 4.11.14 (2019-11-10)

Fixes:

- Fixed an issue where removing and re-adding an item would not cause dependent items to be recompiled (#1463, #1464)

## 4.11.13 (2019-11-02)

Fixes:

- Fixed an issue which could cause Nanoc to freeze when generating the output diff on Windows

## 4.11.12 (2019-09-21)

Fixes:

- Fixed an issue with the output diff, where some hunks would not appear (#1457)

## 4.11.11 (2019-09-07)

Fixes:

- Made output diff more reliable (#1455, #1456)

## 4.11.10 (2019-08-31)

Fixes:

- Fixed problem with sporadic `DDMetrics::Stopwatch::AlreadyRunningError` (#1445)

## 4.11.9 (2019-08-17)

Enhancements:

- Allowed specifying excluded files across all checks (#1438)
- Replace handlebars.rb with ruby-handlebars (#1443)
- Improved dependency tracking for Sass imports (#1451, #1452) [Romain Goyet]

## 4.11.8 (2019-08-08)

Fixes:

- Fixed issue with `#find_all` yielding incorrect objects, causing a crash when attempting to access attributes (#1446, #1447)

## 4.11.7 (2019-07-28)

Fixes:

- Fixed handling of protocol-relative URLs (#1444)

## 4.11.6 (2019-07-06)

Fixes:

- Fixed crash in the `show-data` command when printing layout outdatedness (#1432)
- Fixed crash in the `view` command when host/port is not specified

Enhancements:

- Added `#env_name` to `@config` (#1437)
- Made the `external_links` checker detect more kinds of broken links (#1422) [Daniel Aleksandersen]
- Made the `external_links` checker shuffle the list of links (#1429) [Daniel Aleksandersen]

## 4.11.5 (2019-04-30)

Fixes:

- Fixed an incompatibility introduced in Cri 2.15.4 (#1423, #1426)

## 4.11.4 (2019-04-28)

Fixes:

- Fixed an issue which could cause `#compiled_content` to sometimes return compiled content that erroneously includes the layout (#1412, #1421)

## 4.11.3 (2019-04-27)

Enhancements:

- Set a User-Agent for HTTP requests made by the `external_links` check (#1417) [Daniel Aleksandersen]
- Added `atom:link[type]` attributes (#1415) [Daniel Aleksandersen]
- Made the `external_links` check treat permanent redirects as errors (#1419) [Daniel Aleksandersen]

## 4.11.2 (2019-02-16)

Fixes:

- Fixed issue which prevented Sass (not SCSS) files from being imported (#1397, #1407) [Alexander Groß]

## 4.11.1 (2019-02-09)

Fixes:

- Fixed an issue which caused hardlinking to fail in certain situations (#1405, #1406)

## 4.11.0 (2018-12-01)

Features:

- Added support for generating inline source maps for Sass (#1376) [Gregory Pakosz]
- Added `:tiebreaker` option to the breadcrumbs helper, so that it can deal with ambiguity (#1368)

## 4.10.4 (2018-12-01)

Fixes:

- Fixed an error when importing a Sass/SCSS file outside of Nanoc’s content directory (#1378, #1379)

## 4.10.3 (2018-10-28)

Fixes:

- Fixed an issue which could cause `write nil` to still invoke the routing rule (#1374, #1375)

## 4.10.2 (2018-10-21)

Fixes:

- Fixed an issue where changing a layout rule’s parameters would not recompile items that use the layout for this layout rule (#1372, #1373)

## 4.10.1 (2018-10-16)

Fixes:

- Made Nanoc no longer crash when the Sass gem is not available (#1371)

## 4.10.0 (2018-10-14)

Features:

- Added source map support to the Sass filter (#1365) [Gregory Pakosz]
- Added a `nanoc()` Sass function (#1365) [Gregory Pakosz]

Fixes:

- Ensured breadcrumb trail always ends in item itself (#1367)

Enhancemens:

- Made Nanoc error when meta-file cannot be unambiguously associated (#1370)

## 4.9.9 (2018-10-06)

Fixes:

- Allowed `items_root` and `layouts_root` to be null

## 4.9.8 (2018-10-05)

Fixes:

- Fixed missing `configuration-schema.json` file

## 4.9.7 (2018-10-05)

Enhancements:

- Added `title_proc:` option to the blogging helper (#1362, #1363) [Thomas Hochstein]
- Dropped Ruby 2.3 support, as it is no longer maintained (#1361)
- Added static configuration file verification (#1360)

## 4.9.6 (2018-09-19)

Fixes:

- Fixed an issue which would cause the checksum of binary items created by the filesystem data source not to be updated when the content changes (#1358, #1359)

## 4.9.5 (2018-09-15)

Fixes:

- Fixed an issue which would cause Nanoc to trip up when the working directory changes during compilation (#1338, #1353, #1354, #1357)

## 4.9.4 (2018-08-19)

Fixes:

- Fixed an issue where compiled content of items generated in the preprocessor would not be available in the postprocessor (#1341, #1348)

## 4.9.3 (2018-06-09)

Enhancements:

- Added an `:exclude` option to `relativize_paths`, to exclude certain paths from being relativized (#1340)

## 4.9.2 (2018-03-30)

Fixes:

- Fixed bug which caused `output_dir` not to be ignored when checking for excludes in pruner (#1313, #1324)
- Fixed bug which caused `Filter#depend_on` not to create a proper dependency when the depended-on item has no representations (#1330)

Enhancements:

- Made Nanoc use hardlinks instead of copying files when possible (#1321) [Antonio Terceiro]
- Made Nanoc show an understandable error when a filter returns `nil` by accident (#1323, #1326)
- Made the checks also consider `.xhtml` and `.htm` files (#1328, #1329)
- Made Nanoc not report thread exceptions, which would freeze Ruby (#1332)

## 4.9.1 (2018-02-22)

Fixes:

- Fixed issue which could cause terminal output to be jumbled up (#1312, #1316)
- Made pruner ignore `output_dir` configuration attribute when checking for excludes (#1313, #1317)
- Fixed handling of interrupts (SIGINT) in the `shell` command (#1309, #1318)
- Added workaround for `relativize_paths` mangling `gcse:search` elements (#1319, #1320)

Enhancements:

- Allowed overriding `<id>` and `<link rel="alternate">` elements in Atom feed generator (#1301) [Ian Young]
- Made `sh` an alias for the `shell` command (#1308)
- Simplified the default configuration (#1311)
- Removed routing rules from newly-created sites (#1310)

## 4.9.0 (2018-01-31)

Features:

- Added `Identifier#match?` (#1305)
- Added `Nanoc::Check.define`
- Made Nanoc read checks configuration from `nanoc.yaml` (#1296)

Enhancements:

- Made Nanoc write out files asynchronously (#1288)
- Made the filesystem data source ignore an initial blank line after the frontmatter (#1292, #1293)
- Made the `check` command run deploy checks by default (#1304)
- Made Nanoc honor the `NO_COLOR` environment variable (#1306)

Bugs:

- Fixed a potential deadlock in the `external_links` check (#1294, #1295)
- Fixed the `external_links` check’s handling of redirects without a `Location` header (#1297, #1302)
- Fixed the `external_links` check’s handling of URLs with invalid components (#1303)

## 4.8.19 (2018-01-01)

Enhancements:

- Made `write nil` skip routing rule (#1286)

## 4.8.18 (2017-12-28)

Enhancements:

- Added `.tex` to the default list of text extensions (#1280) [Rien Maertens]

Fixes:

- Made `#breadcrumbs_trail` smarter about picking the right parent when there is ambiguity (#1278, #1279)
- Made `#find_all` be callable with block instead of an argument (like `Enumerable#find_all`) (#1284, #1285)

## 4.8.17 (2017-12-16)

Enhancements:

- Made `LoadError` be printed more nicely (#1273, #1274, #1275)

## 4.8.16 (2017-12-09)

Fixes:

- Made `adsf-live` not be required for `nanoc view`, unless running with `--live-reload`

## 4.8.15 (2017-12-02)

Fixes:

- Made `nanoc` show item being compiled in crash logs of all errors, not just errors inheriting from `StandardError` (#1258)
- Made Erubi stack traces include the filename of the item or layout that is being compiled (#1255, #1259)
- Prevented `view --live-reload` from crashing when the output directory does not exist (#1254, #1261)

Enhancements:

- Made pruner not remove the output directory if it’s empty (#1260)

## 4.8.14 (2017-11-27)

Same as 4.8.13, but published with the proper release date.

## 4.8.13 (2017-11-27)

Enhancements:

- Added `-L`/`--live-reload` option to `nanoc view` (#1251)

## 4.8.12 (2017-11-16)

Fixes:

- Fixed issue where changing `:output_dir` during preprocessing would prevent Nanoc from performing incremental compilation (#1248, #1249)

Enhancements:

- Allowed creation of pattern from symbols, not just strings (#1247) [Gregory Pakosz]

## 4.8.11 (2017-10-28)

Enhancements:

- Added `:save_with` parameter to `relativize_paths` filter (#1237) [Gregory Pakosz]
- Made error messages more compact and easier to read

## 4.8.10 (2017-10-08)

Fixes:

- Fixed handling of four dashes for separating metadata (#1222, #1223)
- Made `#raw_path` unavailable in rules context (#1231)

## 4.8.9 (2017-09-22)

Fixes:

- Fixed “uninitialized constant DisabledContracts::Args” error

## 4.8.8 (2017-09-22)

Enhancements:

- Added `#dig` to configuration (#1221) [Gregory Pakosz]

## 4.8.7 (2017-09-18)

Fixes:

- Fixed “uninitialized constant CGI” issue (#1218)

## 4.8.6 (2017-09-17)

Fixes:

- Fixed issue which would cause items not to be considered as outdated when their content and/or attributes are changed in the preprocessor (#1216, #1217)

## 4.8.5 (2017-09-07)

Enhancements:

- Made `nanoc check` accept hyphenated check names (e.g. `internal-links`, in addition to `internal_links`).
- `compile --verbose` now prints “cached” rather than “identical” when cached compiled content is used. (#1214)

## 4.8.4 (2017-09-03)

Fixes:

- Fixed issue which caused the CLI to load the site at the wrong moment (#1211, #1212, #1213)

## 4.8.3 (2017-08-30)

Fixes:

- Disallowed full identifiers from ending with a slash (#1206)
- Made `nanoc view` listen on 127.0.0.1, not 0.0.0.0, by default (#1205)

Enhancements:

- Made `nanoc view` print site URL (#1204)
- Made `nanoc` search for parent directory containing Nanoc site (#1210)

## 4.8.2 (2017-08-19)

Fixes:

- Fixed compatibility issue with guard-nanoc

## 4.8.1 (2017-08-06)

Enhancements:

- Various speed improvements

## 4.8 (2017-07-17)

Features:

- Added `asciidoctor` filter (#1199)

## 4.7.14 (2017-07-16)

Enhancements:

- Various speed improvements (#1195, #1198)

## 4.7.13 (2017-07-02)

Enhancements:

- Made adding an item or a layout only recompile items that likely depend on it (#1191, #1193)

## 4.7.12 (2017-06-23)

Fixes:

- Fixed an issue in which the fog deployer could run out of open file descriptors (#1189)

Enhancements:

- Made changes to `@config` only cause outdatedness of items that depend on `@config` (#1188)

## 4.7.11 (2017-06-17)

Fixes:

- Made the `external_links` check always use GET, not HEAD (#1178, #1179)
- Fixed an issue where changing identifiers during preprocessing could cause a crash (#1184, #1185)

Enhancements:

- Added `--preprocess` to `shell` command, to load preprocessed site data (#1180)

## 4.7.10 (2017-05-14)

Fixes:

- Fixed behavior of `parent_config_file` so that it merges, rather than overwrites (#1176) [Gregory Pakosz]

Enhancements:

- Made `slim` filter show the filename in error messages (#1175) [Alexander Groß]
- Added `#use_helper` as an alternative to `#include` for enabling helpers (#1170)

## 4.7.9 (2017-05-01)

Fixes:

- Fixed character set handling of code snippets (#1171, #1174)

Enhancements:

- Added `xml:base` support (#1172, #1173) [Chris Burkhardt]

This release drops support for Ruby 2.2, as it is no longer maintained.

## 4.7.8 (2017-04-22)

Fixes:

- Fixed a crash when printing dependency cycle error messages (#1164, #1166)
- Fixed incorrect ordering in dependency cycle error messages (#1167, #1168)
- Fixed a crash when attempting to print malformed UTF-8 strings (#1163, #1165)

Enhancements:

- Added various speed improvements (#1158, #1159, #1160)

## 4.7.7 (2017-04-16)

Enhancements:

- Added `--diff` option to `compile` command as a one-time alternative to `enable_output_diff` (#1155)
- Sped up incremental compilation (#1156, #1157)

## 4.7.6 (2017-04-15)

Enhancements:

- Added support for `:html5` in `relativize_paths` and `colorize_syntax` filters (#1153)

## 4.7.5 (2017-04-01)

Fixes:

- Made `--verbose` be recognised when calling `nanoc` without subcommand (#1145, #1146)

Enhancements:

- Made `show-data` print all outdatedness reasons, not just the first (#1142)
- Sped up `@items.find_all` (#1147)

## 4.7.4 (2017-03-29)

Enhancements:

- Made attribute dependencies cause outdatedness less often (#1136, #1137, #1138)
- Improved speed of Rules file handling (#1140)

## 4.7.3 (2017-03-26)

Fixes:

- Fixed an issue which could cause a missing file for a snapshot that is not `:last` not to be regenerated when compiling (#1134, #1135)

## 4.7.2 (2017-03-21)

Fixes:

- Fixed crash when calling `#raw_path` in the Checks file (#1130, #1131)

## 4.7.1 (2017-03-19)

Fixes:

- Fixed issue with `:xsl` filter not recompiling when it should (#924, #1127)

Enhancements:

- Made `compile --verbose` print percentiles rather than averages (#1122)
- Improved dependency cycle error messages (#1123)

## 4.7 (2017-03-15)

Features:

- Added `:erubi` filter (#1103) [Jan M. Faber]
- Added `write ext: 'something'` shortcut (#1079)

## 4.6.4 (2017-03-10)

Fixes:

- Fixed issue where `compile --verbose` would show misleading timing information (#1113)

## 4.6.3 (2017-03-05)

Fixes:

- Fixed `Errno::ENOENT` crash (#1094, #1109)
- Fixed undefined method `#reverse_each` crash (#1107, #1108)
- Fixed compilation speed issue introduced in 4.6.2 (#1106)

## 4.6.2 (2017-03-04)

Fixes:

- Fixed crash in `#binary?` (#1082, #1083, #1084)
- Fixed issue which would cause the file referenced by `#raw_path` not to exist (#1097, #1099)

Enhancements:

- Allowed calling `#write` multiple times in the same rule (#1037, #1085)
- Changed the `html` check to use validator.nu (#1104)

## 4.6.1 (2017-01-29)

Fixes:

- Fixed table formatting in `compile --verbose` (#1074) [Hugo Peixoto]

Enhancements:

- Reduced memory usage (#1075, #1076, #1077, #1078)

## 4.6 (2017-01-22)

Features:

- Made `#content_for` accept a string as well as a block, to allow setting captured content outside of ERB (#1066, #1073)
- Added `#raw_content=` to items and layouts during preprocessing (#1057)
- Added `#snapshot?` to item rep views (#1056)

Enhancements:

- Prevented useless recompilations when switching Nanoc environments (#1070, #1071)

## 4.5.4 (2017-01-16)

Fixes:

- Fixed issue with site not being recompiled fully when switching between environments (#1067, #1069)

## 4.5.3 (2017-01-15)

Fixes:

- Fixed “Fixnum is deprecated” message (#1061, #1062)
- Fixed `:pre` snapshot not being created for items that are not laid out (#1064, #1065)

## 4.5.2 (2017-01-11)

Fixes:

- Fixed handling of periods in full identifiers (#1022, #1059)
- Fixed “cannot layout binary items” error message (#1058)
- Fixed escaping of URLs in sitemaps (#1052, #1054)

## 4.5.1 (2017-01-09)

Fixes:

- Fixed crash when Nokogiri is not installed (#1053)

## 4.5 (2017-01-09)

Features:

- Added Git deployer (#997)

## 4.4.7 (2017-01-05)

Fixes:

- Fixed issue that caused an item not to be considered outdated when only the mtime has changed (#1046)
- Removed stray `require 'parallel'` which could break the `external_links` check (#1051) [Cédric Boutillier]

Enhancements:

- Made Nanoc not recompile compiled items after an exception occurs (#1044)

## 4.4.6 (2016-12-28)

Fixes:

- Fixed issue where `#compiled_content` would not return the correct content (#1040, #1041)

## 4.4.5 (2016-12-24)

Fixes:

- Prevented stale data from making it into the checksum store and thereby blowing up in memory (#1004, #1027)
- Fixed slow recompile after adding many items to a site (#1028)
- Fixed wrong capturing helper output when the output field separator (`$,`) is set
- Fixed issue that could cause items with multiple reps not to be recompiled when needed (#1031, #1032)
- Fixed error when fetching textual content of item whose `:last` snapshot is binary (#1035, #1036)

## 4.4.4 (2016-12-19)

Enhancements:

- Improved speed of incremental compilations (#1017, #1019, #1024)

## 4.4.3 (2016-12-17)

Fixes:

- Prevented stale data from making it into the compiled content cache and thereby blowing up in memory (#1004, #1013)
- Fixed “about” and “IRC channel” links in default site
- Fixed accuracy of `<updated>` in Atom feed (use most recent `updated_at` or `created_at`) (#1007, #1014)

Enhancements:

- Added support for non-legacy identifiers in `#breadcrumbs_trail` (#1010, #1011)
- Defined checksum for `Nanoc::Int::Context` to make outdatedness checker more precise (#1008, #1012)
- Made Nanoc raise an error when item reps are routed to a path that does not start with a slash (#1015, #1016)

## 4.4.2 (2016-11-27)

Fixes:

- Fixed “Maximum call stack size exceeded” issue in the `less` filter (#1001)
- Fixed issue that could cause the `less` filter to not generate all necessary dependencies (#1003)

Enhancements:

- Improved the way that the crash log displays the item rep that is being compiled (#1000)

## 4.4.1 (2016-11-21)

Fixes:

- Fixed an issue where the `xsl` filter would not generate a correct dependency on the layout (#996)

Enhancements:

- Made `view` command use index filenames specified in the `index_filenames` site configuration attribute (#998)

## 4.4 (2016-11-19)

Features:

- Added support for Nanoc environments (#859)

## 4.3.8 (2016-11-18)

Enhancements:

- Improved support for Rouge 1.x and 2.x (#880) [Rémi Barraquand]
- Added `#include` to the `nanoc shell` command (#973)
- Improved speed of full and incremental compilations (#977, #985)

Fixes:

- Made routing rules and `#write` calls accept an identifier, and not just a string (#976)
- Removed GC speed-up hacks, which became counterproductive in Ruby 2.2 (#975)
- Fixed issue which caused items to be always recompiled if `rep`/`item_rep` or `self` are used in those items’ rules (#982)

## 4.3.7 (2016-10-29)

Fixes:

- Fixed issue with `show-data` and `show-rules` commands not showing all data (#970) [Chris Chapman]

Enhancements:

- Improved speed of `compile` command (#968)
- Improved speed of `prune` command (#969)
- Made kramdown warnings include affected item rep (#967) [Gregory Pakosz]
- Made kramdown warnings configurable (#967) [Gregory Pakosz]

## 4.3.6 (2016-10-23)

Fixes:

- Made legacy patterns properly support full identifiers (#957)
- Fixed timezone issues in `#to_iso8601_date` (#961)
- Fixed error when accessing item (rep) paths in shell command (#963)
- Fixed issue that caused `#path` to be nil inside compilation rules (#964)
- Made `__FILE__` in Checks file be a absolute path (#966)

Enhancements:

- Made the command line write status information to stderr, not stdout (#958)

## 4.3.5 (2016-10-14)

Fixes:

- Handle `form/@action` in `relativize_paths` filter (#950) [Lorin Werthen]

Experimental features:

- `profiler`: adds `--profile` option to the `compile` command to profile compilation (#903)
- `environments`: adds support for Nanoc environments (#859)

## 4.3.4 (2016-10-02)

Fixes:

- Fixed compilation crash when output directory does not exist and auto-pruning is enabled (#948, #949)

## 4.3.3 (2016-09-26)

Fixes:

- Fixed issue causing `Bundler::GemfileNotFound` to be thrown (#936) [Lorin Werthen]
- Fixed issue when replacing a directory with a file or vice versa (#942, #946)

Enhancements:

- Modified the `compile` command to allow specifying the deploy target as argument (#945)

## 4.3.2 (2016-08-23)

Identical to 4.3.1, but with corrected release notes.

## 4.3.1 (2016-08-23)

Fixes:

- Fixed “outdatedness of LayoutView” error (#927, #931)
- Fixed bug causing some checks not to appear in `nanoc check --list` (#928, #930)
- Fixed `@item`, … not being accessible in filters defined with `Nanoc::Filter.define` (#932, #934)

## 4.3 (2016-08-21)

Features:

- Added `Nanoc::Filter.define`, to easily define filters (#895)
- Made the `nanoc` Gemfile group be auto-required when Nanoc starts (#910) [whitequark]

## 4.2.4 (2016-07-24)

Fixes:

- Fixed `UnmetDependency` errors in postprocessor (#913, #917)

Enhancements:

- Sped up Nanoc by not releasing cache memory as quickly (#902)
- Let `internal_links` check also verify resource paths, such as scripts and images (#912) [Lorin Werthen]
- Improved error reporting for errors in the Rules file (#908, #914, #915, #916)
- Removed `win32console` support, as it’s deprecated and causing problems (#900, #918)

## 4.2.3 (2016-07-03)

Fixes:

- Fixed issue with `#inspect` raising a `WeakRef::RefError` (#877, #897)

Enhancements:

- Sped up compiler (#894)
- Improved `#inspect` output of some classes (#896)
- Deprecated `Item#modified` and replaced it with `Item#modified_reps` (#898)

## 4.2.2 (2016-07-02)

Fixes:

- Fixed confusing “invalid prefix” error message (#873, #879)
- Ensured filter arguments are frozen, to prevent outdatedness checker errors (#881, #886)
- Fixed issue with dependencies of items generated in the preprocessor not being tracked (#885, #891, #893)

Enhancements:

- Added specific handling for `Sass::Importers::Filesystem` in the checksummer, which should reduce unnecessary recompiles in sites using Compass (#866, #884)
- Improved speed of checksummer (#864, #887)

## 4.2.1 (2016-06-19)

Fixes:

- Fixed an occasional `WeakRef::RefError` (#863, #865)
- Fixed `show-data` command not running preprocessor (#867, #870)

## 4.2 (2016-06-04)

Enhancements:

- Dropped Ruby 2.1 support (#856)

This release also includes the changes from 4.2.0b1.

## 4.1.6 (2016-04-17)

Fixes:

- Strip index.html only if it is a full component (#850, #851)
- Force UTF-8 for item rep paths (#837, #852)

## 4.2.0b1 (2016-04-17)

Features:

- Allow creating items and layouts with a pre-calculated checksum (#793) [Ruben Verborgh]
- Allow lazy-loading item/layout content and attributes (#794) [Ruben Verborgh]
- Added `exclude_origins` configuration option to internal links checker (#847)
- Added `ChildParent` helper, providing `#children_of` and `#parent_of` (#849)

Enhancements:

- Made `#html_escape` raise an appropriate error when the given argument is not a String (#840) [Micha Rosenbaum]
- Improved memory usage of memoized values by using weak refs (#846)

## 4.1.5 (2016-03-24)

Fixes:

- Fixed crash in `show-data` command (#833, #835)
- Fixed preprocessor not being invoked before running checks (#841, #842)

## 4.1.4 (2016-02-13)

Fixes:

- Added missing `Configuration#key?` method (#815, #820)
- Made output diff use correct snapshot rather than `:last` (#813, #814)

Enhancements:

- Sped up item resolution in Sass filter (#821)
- Made `#link_to` more resilient to unsupported argument types (#816, #819)

## 4.1.3 (2016-01-30)

Fixes:

- Fixed crash in `check` command when the subject of an issue is nil (#804, #811)
- Made stale check not ignore non-final snapshot paths (#809, #810)

## 4.1.2 (2016-01-16)

Fixes:

- Made @-variables (e.g. `@items`) report their frozenness properly, so that optimisations based on frozenness work once again (#795, #797)
- Removed environment from `crash.log` to prevent leaking sensitive information (#798, #800)

Enhancements:

- Removed redundant checksum calculation (#789) [Ruben Verborgh]

## 4.1.1 (2015-12-30)

Fixes:

- Fixed preprocessor not being run before check/deploy/prune commands (#763, #784, #787, #788)

Enhancements:

- Made `#breadcrumbs_trail` explicitly fail when using full identifiers (#781, #783)

## 4.1 (2015-12-18)

Fixes:

- Fixed crash when attempting to `#puts` an object that’s not a string (#778)
- Made pruner not prune away files from routes defined for custom snapshots (#779)
- Wrapped `@layout` in a layout view (#773)

Enhancements:

- Added a base path to the Checks file, so that it supports `#require_relative` (#774)

This release also includes the changes from 4.1.0a1 to 4.1.0rc2.

## 4.1.0rc2 (2015-12-13)

Fixes:

- Fixed children of the root item not having a parent (#769, #770)

Enhancements:

- Made `#path`, `#compiled_content` and `#reps` unavailable during pre-processing, compilation and routing, because they do not make sense in these contexts (#571, #767, #768)

## 4.1.0rc1 (2015-12-12)

Fixes:

- Fixed `@item.compiled_content` in a layout raising an exception (#761, #766)

## 4.1.0b1 (2015-12-11)

Fixes:

- Fixed issue with `:pre` snapshot not being generated properly (#764)

Enhancements:

- Updated default site to use `#write` (#759)

## 4.1.0a1 (2015-12-05)

Features:

- Added `postprocess` block (#726) [Garen Torikian]
- Added `#write` compilation instruction and `path` option to `#snapshot` (#753)

Fixes:

- Fixed crash when printing non-string object (#712) [Garen Torikian]
- Removed English text from `#link_to` helper (#736) [Lucas Vuotto]

Enhancements:

- Allowed excluding URLs from external links check (#686) [Yannick Ihmels]
- Added `atom` to list of text extensions (#657) [Yannick Ihmels]
- Added `#each` to `Nanoc::ConfigView` (#705) [Garen Torikian]
- Made `#attribute_to_time` handle `DateTime` (#717) [Micha Rosenbaum]
- Added `Identifier#components` (#677)
- Added `:existing` option to `#content_for` (can be `:error`, `:overwrite` and `:append`) (#744)

## 4.0.2 (2015-11-30)

Fixes:

- Properly set required Ruby version to 2.1 in the gem specification (#747)
- Fixed issue with CLI commands not being loaded as UTF-8 (#742)
- Added missing `#identifier=` method to items and layouts during preprocessing (#750)

Enhancements:

- Let attempts to fetch an item rep by number, rather than symbol, fail with a meaningful error (#749)

## 4.0.1 (2015-11-28)

Fixes:

- Fixed params documentation for :rdiscount filter (#722)
- Fixed crash when comparing item rep views (#735, #738)

Enhancements:

- Lowered minimum required Ruby version from 2.2 to 2.1 (#732)

## 4.0 (2015-11-07)

Enhancements:

- `#parent` and `#children` now raise an exception when used on items with a non-legacy identifier (#710)

This release also includes the changes from 4.0.0a1 to 4.0.0rc3.

## 4.0.0rc3 (2015-09-20)

Features:

- Added `Identifier#without_exts` and `Identifier#exts` (#644, #696) [Rémi Barraquand]
- Added `DocumentView#attributes` (#699, #702)

Fixes:

- Fixed issue when comparing document views (#680, #693)

Enhancements:

- Made `#base_url` argument in `#tags_for` optional (#687) [Croath Liu]
- Allowed `IdentifiableCollection#[]` to be passed an identifier (#681, #695)
- Improved `Pattern.from` error message (#683, #692)
- Let default site use a direct link to the stylesheet (#685, #701)

Changes:

- Removed `Identifier#with_ext` because its behavior was confusing (#697, #700)
- Disallowed storing document (views) in attributes (#682, #694)

## 4.0.0rc2 (2015-07-11)

Fixes:

- Fixed broken `shell` command (#672) [Jim Mendenhall]
- Fixed absolute path check on Windows (#656)

Enhancements:

- Made Nanoc error when multiple items have the same output path (#665, #669)
- Improved error message for non-hash frontmatter (#670, #673)

Changes:

- nanoc is now called Nanoc

## 4.0.0rc1 (2015-06-21)

Fixes:

- Fixed double-wrapping of `@layout` in rendering helper (#631)
- Fixed `show-rules` command (#633)

## 4.0.0b4 (2015-06-10)

Fixes:

- Added missing `#ext` method to identifiers (#612)
- Fixed issue where identifiers would have the wrong extension (#611)
- Fixed rule context exposing entities rather than views (#614, #615)
- Fixed `#key?` and `#fetch` not being available on layout views (#618)
- Fixed `#update_attributes` not being available on mutable layout views (#619)

## 4.0.0b3 (2015-05-31)

Changes:

- Removed `filesystem_verbose` data source (#599)
- Set minimum required Ruby version to 2.2

Enhancements:

- Made `@config`, `@items` and `@layouts` available in checks (#598)
- Made `filesystem` an alias for `filesystem_unified` (#599)
- Made specific reps for an item accessible using `@item.reps[:name]` (#586, #607)
- Removed `allow_periods_in_identifiers` documentation (#605)
- Made fog deployer not upload files with identical ETags to AWS (#480, #536, #552) [Paul Boone]

Fixes:

- Made `ItemView#parent` return nil if parent is nil (#600, #602)
- Added missing `identifier_type` documentation (#604)

## 4.0.0b2 (2015-05-23)

Changes:

- Removed `ItemCollectionView#at` (#582)
- Removed support for calling `ItemCollectionView#[]` with an integer (#582)
- Renamed `identifier_style` to `identifier_type`, and made its values be `"full"` or `"legacy"` (#593)
- Renamed `pattern_syntax` to `string_pattern_type`, and made its values be `"glob"` or `"legacy"` (#593)
- Made `"full"` the default for `identifier_type` (#592, #594)
- Made `"glob"` the default for `string_pattern_type` (#592)
- Enabled auto-pruning by default for new sites (#590)

Enhancements:

- Added `--force` to `create-site` command (#580) [David Alexander]
- Made default Rules file more future-proof (#591)

Fixes:

- Fixed `LayoutCollectionView#[]` documentation (it mentioned items)
- Fixed `ItemCollectionView#[]` returning an array when passed a regex
- Fixed an issue with mutable collection views’ `#delete_if` not yielding mutable views
- Fixed an issue with collection views’ `#find_all` returning entities instead of views

## 4.0.0b1 (2015-05-14)

Changes:

- Removed tasks
- Removed several private methods in the view API
- Removed default `base_url` in tagging helper

Enhancements:

- Removed unused options from CLI
- Added `Nanoc::Identifier#without_ext`
- Made `Nanoc::Identifier#=~` work with a glob
- Added `Nanoc::LayoutCollectionView#[]`
- Allowed creation of site in current directory (#549) [David Alexander]

Fixes:

- Fixed `#passthrough` for identifiers with extensions
- Fixed rendering helper for identifiers with extensions
- Fixed filtering helper

## 4.0.0a2 (2015-05-12)

Features:

- Glob patterns (opt-in by setting `pattern_syntax` to `"glob"` in the site configuration)
- Identifiers with extensions (opt-in by setting `identifier_style` to `"full"` in the data source configuration)

Enhancements:

- Added several convenience methods to view classes (#570, #572)

See the [nanoc 4 upgrade guide](https://nanoc.ws/doc/nanoc-4-upgrade-guide/) for details.

## 4.0.0a1 (2015-05-09)

This is a major upgrade. For details on upgrading, see the [nanoc 4 upgrade guide](https://nanoc.ws/doc/nanoc-4-upgrade-guide/).

This release provides no new features, but streamlines the API and functionality, in order to easen future development, both for features and for optimisations.

## 3.8 (2015-05-04)

Features:

- Added `mixed_content` check (#542, #543) [Mike Pennisi]
- Added `commands_dirs` configuration option for specifying directories to read commands from (#475) [Gregory Pakosz]
- Added `:cdn_id` option to fog deployer for invalidating CDN objects (#451) [Vlatko Kosturjak]
- Add access to regular expressions group matches in rules (#478) [Michal Papis]
- Allow filtering the items array by regex (#458) [Mike Pennisi]

Enhancements:

- Added `:preserve_order` option to preserve order in Atom feed (#533, #534)
- Allowed accessing `:pre` snapshot from within item itself (#537, #538, #548)

Fixes:

- Allowed passing generic Pandoc options with :args (#526, #535)
- Fix crash when compiling extensionless binary items (#524, #525)
- Fix double snapshot creation error (#547)

## 3.7.5 (2015-01-12)

Enhancements:

- Allowed extra patterns to be specified in the data source configuration, so that dotfiles are no longer necessary ignored (e.g. `extra_files: ['.htaccess']`) (#492, #498) [Andy Drop, Michal Papis]
- Removed Ruby 1.8.x support ([details](https://groups.google.com/forum/#!topic/nanoc/pSL1i15EFz8)) (#517)
- Improved CSS and HTML error messages (#484, #504)
- Let kramdown filter print warnings (#459, #519)

Fixes:

- Fixed HTML class names for recent Rouge versions (#502)
- Fixed crash when using items or layouts in attributes (#469, #518)

## 3.7.4 (2014-11-23)

Enhancements:

- Made `check` command fail when output directory is missing (#472) [Mike Pennisi]
- Made external links check timeouts start small and grow (#483) [Michal Papis]
- Made code and API adhere much more closely to the Ruby style guide (#476)

Fixes:

- Fixed potential “parent directory is world writable” error (#465, #474)
- Fixed retrying requests in the external link checker (#483) [Michal Papis]
- Fixed issue with data sources not being unloaded (#491) [Michal Papis]

## 3.7.3 (2014-08-31)

Fixes:

- Fixed issue which caused metadata sections not be recognised in files that use CRLF line endings (#470, #471) [Gregory Pakosz]

## 3.7.2 (2014-08-17)

Fixes:

- Fixed broken links to the now defunct RubyForge (#454, #467)
- Fixed crash when Gemfile is missing but Bundler is installed (#464)
- Made filesystem data source not strip any whitespace (#463) [Gregory Pakosz]

Enhancements:

- Fixed issue which could cause items to be unnecessarily marked as outdated (#461) [Gregory Pakosz]
- Prevented binary layouts from being generated (#468) [Gregory Pakosz]

## 3.7.1 (2014-06-16)

Fixes:

- Fixed bug which would cause nanoc to crash if no Gemfile is present (#447, #449)

## 3.7 (2014-06-08)

New features:

- Allowed excluding links from the internal links check (`@config[:checks][:internal_links][:exclude]`) (#242) [Remko Tronçon]
- Added Rouge syntax coloring filter (#398) [Guilherme Garnier]
- Backported `after_setup` from nanoc 4 to make it easier to create CLI plugins (#407) [Rémi Barraquand]
- Make lib dirs configurable using `lib_dirs` config attribute (#424) [Gregory Pakosz]
- Added support for setting parent config dir using `parent_config_file` config attribute (#419) [Gregory Pakosz]

Enhancements:

- Added `:with_toc` support to RedCarpet (#222, #232)
- Added `slim` to the list of text extensions (#316)
- Made `content/` and `layouts/` dirs configurable (#412) [Gregory Pakosz]
- Allowed included rules files to have their own preprocess block (#420) [Gregory Pakosz]

Fixes:

- Fixed bug which caused temporary directories not to be removed (#440, #444)

## 3.6.11 (2014-05-09)

Identical to 3.6.10 but published with corrected release notes.

This release was previously known as 3.6.10.1, but was renamed due to incompatibilities with the Semantic Versioning specification.

## 3.6.10 (2014-05-09)

Fixes:

- Fixed occasional "no such file" error on JRuby (#422)
- Prevented multiple items and layouts from having the same identifier (#434, #435)

Enhancements:

- Set default encoding to UTF-8 (#428)
- Improved checksummer to reduce number of unnecessary recompiles (#310, #431)
- Disabled USR1 on JRuby in order to suppress warning (#425, #426)
- Made pandoc filter argument passing more generic (#210, #433)

## 3.6.9 (2014-04-15)

Fixes:

- Fixed path to default stylesheet (#410, #411)
- Improved reliability of piping from/to external processes in JRuby (#417)
- Added workaround for “cannot modify” errors when using Nokogiri on JRuby (#416)
- Made corrupted cached data auto-repair itself if possible (#409, #418)

## 3.6.8 (2014-03-22)

Fixes:

- Fixed issue with missing compilation durations (#374, #379)
- Made XSL filter transform item rather than layout (#399, #401) [Simon South]
- Made XSL filter honor omit-xml-declaration (#403, #404) [Simon South]
- Removed "see full crash log" line from crash log (#397, #402)

Enhancements:

- Added warning when multiple preprocessors are defined (#389)
- Improve stylesheet handling in default site (#339, #395)

## 3.6.7 (2013-12-09)

Fixes:

- Made Handlebars filter usable outside layouts (#346, #348)
- Fixed ANSI color support on Windows (#352, #356)
- Made fog deployer handle prefixes properly (#351) [Oliver Byford]
- Fixed crash in watcher (#358)
- Fixed huge durations when showing skipped items after compilation (#360, #364)
- Fixed output of `--verbose` compilation statistics (#359, #365)
- Fixed issue with Sass files not recompiling (#350, #370)

Enhancements:

- Fixed Windows compatibility issues in test suite (#353) [Raphael von der Grün]
- Hid deprecated `autocompile` and `watch` commands in help
- Made CLI swallow broken pipe errors when piping to a process that terminates prematurely (#318, #369)

## 3.6.6 (2013-11-08)

Enhancements:

- Reduced number of dependencies generated by Sass filter (#306) [Gregory Pakosz]
- Recognised lowercase `utf` in language value (e.g. `en_US.utf8`) as being UTF-8 (#335, #338)
- Set [Thin](https://github.com/macournoyer/thin) as the default server for `nanoc view` (#342, #345)
- Removed watcher section from the default configuration file (#343, #344)

Fixes:

- Prevented capturing helper from erroneously compiling items twice (#331, #337)

## 3.6.5 (2013-09-29)

Fixes:

- Fixed bug which could cause incorrect dependencies to be generated in some cases (#329)
- Fixed handling of index filenames when allowing periods in identifiers (#330)

## 3.6.4 (2013-05-29)

Enhancements:

- Deprecated `watch` and `autocompile` commands in favour of [`guard-nanoc`](https://github.com/guard/guard-nanoc)

Fixes:

- Fixed bug which could cause the `tmp/` dir to blow up in size
- Unescaped URLs when checking internal links

## 3.6.3 (2013-04-24)

Fixes:

- Added support for growlnotify on Windows (#253, #267)
- Fixed bug which caused the external links checker to ignore the query string (#279, #297)
- Removed weird treatment of `DOCTYPE`s in the `relativize_paths` filter (#296)
- Fixed CodeRay syntax coloring on Ruby 2.0
- Silenced "Could not find files for the given pattern(s)" message on Windows (#298)
- Fixed issue which could cause `output.diff` not to be generated correctly (#255, #301)
- Let filesystem and static data sources follow symlinks (#299, #302)
- Added compatibility with Listen 1.0 (#309)
- Let `#passthrough` in Rules work well with the static data source (#251) [Gregory Pakosz]
- Made timing information be more accurate (#303)

## 3.6.2 (2013-03-23)

Fixes:

- Removed the list of available deployers from the `deploy` help text and moved
  them into a new `--list-deployers` option [Damien Pollet]
- Fixed warning about `__send__` and `object_id` being redefined on Ruby
  1.8.x [Justin Hileman]

Enhancements:

- Added possible alternative names for the `Checks` file for consistency with
  the `Rules` file: `Checks.rb`, `checks`, `checks.rb` [Damien Pollet]
- Made sure unchanged files never have their mtime updated [Justin Hileman]
- Made link checker retry 405 Method Not Allowed results with GET instead of
  HEAD [Daniel Hofstetter]

## 3.6.1 (2013-02-25)

Fixes:

- Fixed bug which could cause the Sass filter to raise a load error [Damien Pollet]
- Fixed warnings about `__send__` and `object_id` being redefined [Justin Hileman]
- Made `files_to_watch` contain `nanoc.yaml`, not `config.yaml` by default

## 3.6 (2013-02-24)

Features:

- Added `sync` command, allowing data sources to update local caches of
  external data [Justin Hileman]
- Added `#ignore` compiler DSL method
- Allowed accessing items by identifier using e.g. `@items['/about/']`
- Added `shell` command

Enhancements:

- Renamed the nanoc configuration file from `config.yaml` to `nanoc.yaml`

Fixes:

- Updated references to old web site and old repository
- Made `require` errors mention Bundler if appropriate
- Fixed bug which caused pruner not to delete directories in some cases [Matthias Reitinger]
- Made `check` command exit with the proper exit status
- Added support for the `HTML_TOC` Redcarpet renderer
- Made `stale` check honor files excluded by the pruner

## 3.5 (2013-01-27)

Major changes:

- Added checks

Minor changes:

- Added `#include_rules` for modularising Rules files [Justin Hileman]
- Replaced FSSM with Listen [Takashi Uchibe]
- Made USR1 print stack trace (not on Windows)
- Added ability to configure autocompiler host/port in config.yaml [Stuart Montgomery]
- Added static data source
- Added `:rep_select` parameter to XML sitemap to allow filtering reps
- Removed use of bright/bold colors for compatibility with Solarized

Exensions:

- Added support for parameters in Less filter [Ruben Verborgh]
- Added support for icon and logo in Atom feed [Ruben Verborgh]

Fixes:

- Made syntax colorizer only use the first non-empty line when extracting the
  language comment
- Fixed XSL filter

## 3.4.3 (2012-12-09)

Improvements:

- Item reps are now accessible in a consistent way: in Rules and during
  compilation, they can be accessed using both `@rep` and `@item_rep`

Fixes:

- Made cleaning streams (stdout/stderr as used by nanoc) compatible with
  Ruby’s built-in Logger
- Made prune work when the output directory is a symlink
- Made Handlebars filter compatible with the latest version
- Made `show-data` command show more accurate dependencies [Stefan Bühler]
- Restored compatibility with Sass 3.2.2

## 3.4.2 (2012-11-01)

Fixes:

- Made passthrough rules be inserted in the right place [Gregory Pakosz]
- Fixed crashes in the progress indicator when compiling
- Made auto-pruning honor excluded files [Grégory Karékinian]
- Made lack of which/where not crash watch command

Improvements:

- Fixed constant reinitialization warnings [Damien Pollet]
- Made UTF-8 not be decomposed when outputting to a file from a non-UTF-8 terminal
- Made syntax colorizer wrap CodeRay output in required CodeRay divs
- Made fog delete after upload, not before [Go Maeda]
- Made requesting compiled content of binary item impossible

## 3.4.1 (2012-09-22)

Fixes:

- Fixed auto-pruning
- Made slim filter work with the capturing helper [Bil Bas]

Improvements:

- Made several speed improvements
- Added prune configuration to config.yaml
- Made nanoc check for presence of nanoc in Gemfile
- Made compile command not show identicals (use `--verbose` if you want them)
- Made `relativize_paths` filter recognise more paths to relativize [Arnau Siches]
- Fixed #passthrough for items without extensions [Justin Hileman]
- Added more IO/File proxy methods to cleaning streams

## 3.4 (2012-06-09)

- Improved error output and added crash log
- Renamed `debug` and `info` commands to `show-data` and `show-plugins`, respectively
- Added `show-rules` command (aka `explain`)

Extensions:

- Added `:yield` key for Mustache filter
- Added Handebars filter
- Added Pandoc filter
- Made the deployer use the `default` target if no target is specified
- Converted HTML/CSS/link validation tasks to commands
- Made link validator follow relative redirects

## 3.3.7 (2012-05-28)

- Added filename to YAML parser errors
- Fixed issue which caused extra dependencies to be generated
- Made timing information take filtering helper into account

## 3.3.6 (2012-04-27)

- Fixed issue with relative_link_to stripping HTML boilerplate

## 3.3.5 (2012-04-23)

- Fixed issue with relative_link_to not working properly

## 3.3.4 (2012-04-23)

- Fixed bug which caused the compilation stack to be empty
- Restored Ruby 1.8 compatibility

## 3.3.3 (2012-04-11)

- Fixed directed graph implementation on Rubinius
- Made capturing helper not remember content between runs
- Fixed Date#freeze issue on Ruby 1.8.x
- Made it possible to have any kind of object as parameters in the Rules file
- Fixed bug which caused changed routes not to cause a recompile

## 3.3.2 (2012-03-16)

- Removed bin/nanoc3 (use nanoc3 gem if you want it)
- Fixed wrong “no such snapshot” errors
- Made deployer default to rsync for backwards compatibility
- Fixed missing Nanoc::OrigCLI in deployment tasks
- Fixed “unrecognised kind” deployer error

## 3.3.1 (2012-02-18)

- Fixed issue with long paths on Windows
- Fixed a few deployer crashes
- Added nanoc3.rb, nanoc3/tasks.rb, … for compatibility with older versions
- Made nanoc setup Bundler at startup [John Nishinaga]

## 3.3 (2012-02-12)

Base:

- Dropped the “3” suffix on nanoc3/Nanoc3
- Turned Rake tasks into proper nanoc commands
- Improved dependency tracking
- Added support for locals in filters and layouts

Extensions:

- Added support for deployment using Fog [Jack Chu]
- Added CoffeeScript filter [Riley Goodside]
- Added XSL filter [Arnau Siches]
- Added YUICompress filter [Matt Keveney]
- Added pygments.rb to supported syntax colorizers
- Allowed syntax colorizer to colorize outside `pre` elements [Kevin Lynagh]
- Added support for HTTPS link validation [Fabian Buch]
- Added support for (automatically) pruning stray output files [Justin Hileman]
- Added deploy command

## 3.2.4 (2012-01-09)

- Fixed bug which would cause some reps not to be compiled when invoking nanoc programmatically
- Made data source configuration location a bit more obvious
- Fixed watch command under Windows
- Made filesystem data source ignore UTF-8 BOM
- Improved compatibility of `colorize_syntax` filter with older libxml versions

## 3.2.3 (2011-10-31)

- Made syntax colorizer only strip trailing blank lines instead of all blanks
- Improved Ruby 1.9.x compatibility
- Made default rakefile require rubygems if necessary
- Made filename/content argument of `Nanoc3::Item#initialize` mandatory

## 3.2.2 (2011-09-04)

- Fixed command usage printing
- Made `relativize_paths` filter handle Windows network paths [Ruben Verborgh]
- Made watcher use correct configuration
- Allowed code blocks to start with a non-language shebang line

## 3.2.1 (2011-07-27)

- Made `@config` available in rules file
- Fixed `#readpartial` issue on JRuby [Matt Keveney]
- Fixed possible `@cache` name clash in memoization module
- Fixed options with required arguments (such as `--port` and `--host`)
- Fixed broken `#check_availability`
- Fixed error handling in watch command

## 3.2 (2011-07-24)

Base:

- Sped up nanoc quite a bit
- Added progress indicator for long-running filters
- Made all source data, such as item attributes, frozen during compilation
- Added --color option to force color on
- Cleaned up internals, deprecating several parts and/or marking them as private in the progress
- Allowed custom commands in commands/

Extensions:

- Added AsciiDoc filter
- Added Redcarpet filter [Peter Aronoff]
- Added Slim filter [Zaiste de Grengolada]
- Added Typogruby filter
- Added UglifyJS filter [Justin Hileman]
- Added `:items` parameter for the XML site map [Justin Hileman]
- Added support for params to ERB
- Added `:default_colorizer` parameter to the `:colorize_syntax` filter
- Allowed for passing arbitrary options to pygmentize [Matthias Vallentin]
- Exposed RedCloth parameters in the filter [Vincent Driessen]

## 3.1.9 (2011-06-30)

- Really fixed dependency generation between Sass partials this time
- Updated Less filter to 2.0
- Made `colorize_syntax` filter throw an error if pygmentize is not available

## 3.1.8 (2011-06-25)

- Made link validator accept https: URLs
- Fixed erroneous handling of layouts with names ending in index
- Fixed dependency generation between Sass partials
- Fixed errors related to thread requires
- Fixed crash while handling load errors
- Improved encoding handling while reading files

## 3.1.7 (2011-05-03)

- Restored compatibility with Sass 3.1

## 3.1.6 (2010-11-21)

- Fixed issues with incompatible encodings

## 3.1.5 (2010-08-24)

- Improved `#render` documentation
- Improved metadata section check so that e.g. raw diffs are handled properly
- Deprecated using `Nanoc3::Site#initialize` with a non-`"."` argument
- Added Ruby engine to version string
- Allowed the `created_at` and `updated_at` attributes used in the `Blogging` helper to be `Date` instances

## 3.1.4 (2010-07-25)

- Made INT and TERM signals always quit the CLI
- Allowed relative imports in LESS
- Made sure modification times are unchanged for identical recompiled items
- Improved link validator error handling
- Made pygmentize not output extra divs and pres
- Allowed colorizers to be specified using symbols instead of strings
- Added scss to the default list of text extensions

## 3.1.3 (2010-04-25)

- Removed annoying win32console warning [Eric Sunshine]
- Removed color codes when not writing to a terminal, or when writing to Windows’ console when win32console is not installed [Eric Sunshine]
- Added .xhtml and .xml to list of text extensions
- Improved support for relative Sass @imports [Chris Eppstein]

## 3.1.2 (2010-04-07)

- Fixed bug which could cause incorrect output when compilation of an item is delayed due to an unmet dependency

## 3.1.1 (2010-04-05)

- Sass `@import`s now work for files not managed by nanoc
- Rake tasks now have their Unicode description decomposed if necessary

## 3.1 (2010-04-03)

New:

- An `Item#rep_named(name)` function for quickly getting a certain rep
- An `Item#compiled_content` function for quickly getting compiled content
- An `Item#path` function for quickly getting the path of an item rep
- A new “+” wildcard in rule patterns that matches one or more characters
- A `view` command that starts a web server in the output directory
- A `debug` command that shows information about the items, reps and layouts
- A `kramdown` filter ([kramdown site](https://kramdown.gettalong.org/))
- A diff between the previously compiled content and the last compiled content is now written to `output.diff` if the `enable_output_diff` site configuration attribute is true
- Assigns, such as `@items`, `@layouts`, `@item`, … are accessible without `@`
- Support for binary items

Changed:

- New sites now come with a stylesheet item instead of a `style.css` file in the output directory
- The `deploy:rsync` task now use sensible default options
- The `deploy:rsync` task now accepts a config environment variable
- The `deploy:rsync` task now uses a lowercase `dry_run` environment variable
- The `maruku` filter now accepts parameters
- The `rainpress` filter now accepts parameters
- The `filesystem` data source is now known as `filesystem_verbose`
- Meta files and content files are now optional
- The `filesystem_compact` and `filesystem_combined` data sources have been merged into a new `filesystem_unified` data source
- The metadata section in `filesystem_unified` is now optional [Chris Eppstein]
- The `--server` autocompile option is now known as `--handler`
- Assigns in filters are now available as instance variables and methods
- The `#breadcrumbs_trail` function now allows missing parents
- The `sass` filter now properly handles `@import` dependencies

Deprecated:

- `Nanoc3::FileProxy`; use one of the filename attributes instead
- `ItemRep#content_at_snapshot`; use `#compiled_content` instead
- The `last_fm`, `delicious` and `twitter` data sources; fetch online content into a cache by a rake task and load data from this cache instead

## 3.0.9 (2010-02-24)

- Fixed 1.8.x parsing bug due to lack of parens which could cause “undefined method `to_iso8601_time` for #<String:0x…>” errors

## 3.0.8 (2010-02-24)

- `#atom_tag_for` now works with `base_url`s that contain a path [Eric Sunshine]
- Generated root URLs in `#atom_feed` now end with a slash [Eric Sunshine]
- Autocompiler now recognises requests to index files
- `Blogging` helper now allows `created_at` to be a Time instance

## 3.0.7 (2010-01-29)

- Fixed bug which could cause layout rules not be matched in order

## 3.0.6 (2010-01-17)

- Error checking in `filesystem_combined` has been improved [Brian Candler]
- Generated HTML files now have a default encoding of UTF-8
- Periods in identifiers for layouts now behave correctly
- The `relativize_paths` filter now correctly handles “/” [Eric Sunshine]

## 3.0.5 (2010-01-12)

- Restored pre-3.0.3 behaviour of periods in identifiers. By default, a file can have multiple extensions (e.g. `content/foo.html.erb` will have the identifier `/foo/`), but if `allow_periods_in_identifiers` in the site configuration is true, a file can have only one extension (e.g. `content/blog/stuff.entry.html` will have the identifier `/blog/stuff.entry/`).

## 3.0.4 (2010-01-07)

- Fixed a bug which would cause the `filesystem_compact` data source to incorrectly determine the content filename, leading to weird “Expected 1 content file but found 3” errors [Eric Sunshine]

## 3.0.3 (2010-01-06)

- The `Blogging` helper now properly handles item reps without paths
- The `relativize_paths` filter now only operates inside tags
- The autocompiler now handles escaped paths
- The `LinkTo` and `Tagging` helpers now output escaped HTML
- Fixed `played_at` attribute assignment in the `LastFM` data source for tracks playing now, and added a `now_playing` attribute [Nicky Peeters]
- The `filesystem_*` data sources can now handle dots in identifiers
- Required enumerator to make sure `#enum_with_index` always works
- `Array#stringify_keys` now properly recurses

## 3.0.2 (2009-11-07)

- Children-only identifier patterns no longer erroneously also match parent (e.g. `/foo/*/` no longer matches `/foo/`)
- The `create_site` command no longer uses those ugly HTML entities
- Install message now mentions the IRC channel

## 3.0.1 (2009-10-05)

- The proper exception is now raised when no matching compilation rules can be found
- The autocompile command no longer has a duplicate `--port` option
- The `#url_for` and `#feed_url` methods now check the presence of the `base_url` site configuration attribute
- Several outdated URLs are now up-to-date
- Error handling has been improved in general

## 3.0 (2009-08-14)

New:

- Multiple data sources
- Dependency tracking between items
- Filters can now optionally take arguments
- `#create_page` and `#create_layout` methods in data sources
- A new way to specify compilation/routing rules using a Rules file
- A `coderay` filter ([CodeRay site](http://coderay.rubychan.de/))
- A `filesystem_compact` data source which uses less directories

Changed:

- Pages and textual assets are now known as “items”

Removed:

- Support for drafts
- Support for binary assets
- Support for templates
- Everything that was deprecated in nanoc 2.x
- `save_*`, `move_*` and `delete_*` methods in data sources
- Processing instructions in metadata

## 2.2.2 (2009-05-18)

- Removed `relativize_paths` filter; use `relativize_paths_in_html` or `relativize_paths_in_css` instead
- Fixed bug which could cause nanoc to eat massive amounts of memory when an exception occurs
- Fixed bug which would cause nanoc to complain about the open file limit being reached when using a large amount of assets

## 2.2.1 (2009-04-08)

- Fixed bug which prevented `relative_path_to` from working
- Split `relativize_paths` filter into two filter: `relativize_paths_in_html` and `relativize_paths_in_css`
- Removed bundled mime-types library

## 2.2 (2009-04-06)

New:

- `--pages` and `--assets` compiler options
- `--no-color` command-line option
- `Filtering` helper
- `#relative_path_to` function in `LinkTo` helper
- `rainpress` filter ([Rainpress site](https://github.com/ddfreyne/rainpress))
- `relativize_paths` filter
- The current layout is now accessible through the `@layout` variable
- Much more informative stack traces when something goes wrong

Changed:

- The command-line option parser is now a lot more reliable
- `#atom_feed` now takes optional `:content_proc`, `:excerpt_proc` and `:articles` parameters
- The compile command show non-written items (those with `skip_output: true`)
- The compile command compiles everything by default
- Added `--only-outdated` option to compile only outdated pages

Removed:

- deprecated extension-based code

## 2.1.6 (2009-02-28)

- The `filesystem_combined` data source now supports empty metadata sections
- The `rdoc` filter now works for both RDoc 1.x and 2.x
- The autocompiler now serves a 500 when an exception occurs outside compilation
- The autocompiler no longer serves index files when the request path does not end with a slash
- The autocompiler now always serves asset content correctly

## 2.1.5 (2009-02-01)

- Added Ruby 1.9 compatibility
- The `filesystem` and `filesystem_combined` data sources now preserve custom extensions

## 2.1.4 (2008-11-15)

- Fixed an issue where the autocompiler in Windows would serve broken assets

## 2.1.3 (2008-09-27)

- The `haml` and `sass` filters now correctly take their options from assets
- The autocompiler now serves index files instead of 404s
- Layouts named “index” are now handled correctly
- The `filesystem_combined` data source now properly handles assets

## 2.1.2 (2008-09-08)

- The utocompiler now compiles assets as well
- The `sass` filter now takes options (just like the `haml` filter)
- Haml/Sass options are now taken from the page _rep_ instead of the page

## 2.1.1 (2008-08-18)

- Fixed issue which would cause files not to be required in the right order

## 2.1 (2008-08-17)

This is only a short summary of all changes in 2.1. For details, see the
[nanoc web site](https://nanoc.ws/). Especially the blog and the
updated manual will be useful.

New:

- New `rdiscount` filter ([RDiscount site](https://github.com/davidfstr/rdiscount))
- New `maruku` filter ([Maruku site](https://github.com/bhollis/maruku/))
- New `erubis` filter ([Erubis site](http://www.kuwata-lab.com/erubis/))
- A better command-line frontend
- A new filesystem data source named `filesystem_combined`
- Routers, which decide where compiled pages should be written to
- Page/layout mtimes can now be retrieved through `page.mtime`/`layout.mtime`

Changed:

- Already compiled pages will no longer be re-compiled unless outdated
- Layout processors and filters have been merged
- Layouts no longer rely on file extensions to determine the layout processor
- Greatly improved source code documentation
- Greatly improved unit test suite

Removed:

- Several filters have been removed and replaced by newer filters:
  - `eruby`: use `erb` or `erubis` instead
  - `markdown`: use `bluecloth`, `rdiscount` or `maruku` instead
  - `textile`: use `redcloth` instead

## 2.0.4 (2008-05-04)

- Fixed `default.rb`’s `#html_escape`
- Updated Haml filter and layout processor so that @page, @pages and @config are now available as instance variables instead of local variables

## 2.0.3 (2008-03-25)

- The autocompiler now honors custom paths
- The autocompiler now attempts to serve pages with the most appropriate MIME type, instead of always serving everything as `text/html`

## 2.0.2 (2008-01-26)

- nanoc now requires Ruby 1.8.5 instead of 1.8.6

## 2.0.1 (2008-01-21)

- Fixed a “too many open files” error that could appear during (auto)compiling

## 2.0 (2007-12-25)

New:

- Support for custom layout processors
- Support for custom data sources
- Database data source
- An auto-compiler
- Pages have `parent` and `children`

Changed:

- The source has been restructured and cleaned up a great deal
- Filters are defined in a different way now
- The `eruby` filter now uses ERB instead of Erubis

Removed:

- The `filters` property; use `filters_pre` instead
- Support for Liquid

## 1.6.2 (2007-10-23)

- Fixed an issue which prevented the content capturing plugin from working

## 1.6.1 (2007-10-14)

- Removed a stray debug message

## 1.6 (2007-10-13)

- Added support for post-layout filters
- Added support for getting a File object for the page, so you can now e.g. easily get the modification time for a given page (`@page.file.mtime`)
- Cleaned up the source code a lot
- Removed deprecated asset-copying functionality

## 1.5 (2007-09-10)

- Added support for custom filters
- Improved Liquid support -- Liquid is now a first-class nanoc citizen
- Deprecated assets -- use something like rsync instead
- Added `eruby_engine` option, which can be `erb` or `erubis`

## 1.4 (2007-07-06)

- nanoc now supports ERB (as well as Erubis); Erubis no longer is a dependency
- `meta.yaml` can now have `haml_options` property, which is passed to Haml
- Pages can now have a `filename` property, which defaults to `index` [Dennis Sutch]
- Pages now know in what order they should be compiled, eliminating the need for custom page ordering [Dennis Sutch]

## 1.3.1 (2007-06-30)

- The contents of the `assets` directory are now copied into the output directory specified in `config.yaml`

## 1.3 (2007-06-24)

- The `@pages` array now also contains uncompiled pages
- Pages with `skip_output` set to true will not be outputted
- Added new filters
  - Textile/RedCloth
  - Sass
- nanoc now warns before overwriting in `create_site`, `create_page` and `create_template` (but not in compile)

## 1.2 (2007-06-05)

- Sites now have an `assets` directory, whose contents are copied to the `output` directory when compiling [Stanley Rost]
- Added support for non-eRuby layouts (Markaby, Haml, Liquid, …)
- Added more filters (Markaby, Haml, Liquid, RDoc [Dmitry Bilunov])
- Improved error reporting
- Accessing page attributes using instance variables, and not through `@page`, is no longer possible
- Page attributes can now be accessed using dot notation, i.e. `@page.title` as well as `@page[:title]`

## 1.1.3 (2007-05-18)

- Fixed bug which would cause layoutless pages to be outputted incorrectly

## 1.1.2 (2007-05-17)

- Backup files (files ending with a “~”) are now ignored
- Fixed bug which would cause subpages not to be generated correctly

## 1.1 (2007-05-08)

- Added support for nested layouts
- Added coloured logging
- `@page` now hold the page that is currently being processed
- Index files are now called “content” files and are now named after the directory they are in [Colin Barrett]
- It is now possible to access `@page` in the page’s content file

## 1.0.1 (2007-05-05)

- Fixed a bug which would cause a “no such template” error to be displayed when the template existed but compiling it would raise an exception
- Fixed bug which would cause pages not to be sorted by order before compiling

## 1.0 (2007-05-03)

- Initial release