CHANGELOG.md in stackprof-0.2.12 vs CHANGELOG.md in stackprof-0.2.13

@@ -1,3 +1,15 @@
-# 0.2.12
+# 0.2.13
 
-* Eliminate one loop over the stack by using `overall_samples` [#98]
\ No newline at end of file
+* Remove /ext from .gitignore
+* update gemfile
+* Add ruby 2.5 to CI targets
+* comment some of the inner workings
+* feature: add --json format
+* Add test coverage around the string branch in result writing
+* Flip conditional to use duck typing
+* Allow Pathname objects for Stackprof :out
+* Fix a compilation error and a compilation warning
+* Add `--alphabetical-flamegraph` for population-based instead of timeline
+* Add `--d3-flamegraph` to output html using d3-flame-graph
+* Avoid JSON::NestingError when processing deep stacks
+* Use docker for CI