CHANGES.md in datacite-mapping-0.1.17.2 vs CHANGES.md in datacite-mapping-0.2.0

@@ -1,4 +1,37 @@
+## 0.2.0
+
+- Datacite 4.0 support:
+  - reading supports both Datacite 3 and Datacite 4
+  - writing now defaults to Datacite 4
+    - deprecated elements will produce a warning
+  - Datacite 3 support via `mapping: :datacite_3`
+    - invalid elements (`<geoLocationPolygon/>`, `<fundingReference>`)
+      will be dropped, with a warning
+    - [IGSN](http://igsn.github.io/overview/) identifiers will be converted to Handle identifiers
+- `language` and `xml:lang` attributes no longer default to `'en'` and are 
+  now fully optional.
+- `Date` now properly supports [RKMS-ISO8601](http://www.ukoln.ac.uk/metadata/dcmi/collection-RKMS-ISO8601/)
+  date ranges
+- Remove `Datacite::Mapping.log` in favor of `warn()`
+- Array fields (`subjects`, `contributors`, etc.) can no longer be set to nil; if set to 
+  nil they will instead return an empty array.
+- `:nonvalidating` mapping has been removed. Instead:
+  - `<subject/>` and `<description/>` tags without text are ignored on read, as are `<geoLocation>`
+    tags with no child elements.
+  - missing `<identifiers/>` and `<identifiers/>` with missing values are ignored on read, but
+    the `Resource` must be given a valid `Identifier` before writing it back out.
+
+## 0.1.18 (unreleased)
+
+- Datacite 4.0 support:
+  - read Datacite 4.0 `<fundingReference/>` tag (introduced in 0.1.17)
+  - read Datacite 4.0 `<geoLocationBox>` nodes with coordinates in child nodes
+    (`<southBoundLatitude>`, `<westBoundLongitude>`, `<northBoundLatitude>`, `<eastBoundLongitude>`)
+    rather than element text
+  - read Datacite 4.0 `<geoLocationPoint` nodes coordinates in child nodes
+    (`<pointLatitude>`, `<pointLongitude>`) rather than element text
+
 ## 0.1.17.2 (19 August 2016)
 
 - Filter out `<subject/>` tags without values
 
 ## 0.1.17.1 (5 August 2016)