Update changelog for 0.20.0

CHANGELOG.md

@@ -1,5 +1,25 @@
 # Change Log
 
+## [0.20.0](https://github.com/infection/infection/tree/0.20.0) (2020-11-01)
+[Full Changelog](https://github.com/infection/infection/compare/0.19.2...0.20.0)
+
+**Added:**
+
+- Add github logger to be able to use Annotations on GitHub Actions https://github.com/infection/infection/pull/1368
+- Add `--diff-git-filter` & `--git-diff-base` options https://github.com/infection/infection/pull/1368
+- [MUTATOR] Implement UnwrapSubstr mutator https://github.com/infection/infection/pull/1400
+- [MUTATOR] Implement UnwrapStrRev mutator https://github.com/infection/infection/pull/1399
+- [MUTATOR] Implement UnwrapRtrim mutator https://github.com/infection/infection/pull/1396
+- [MUTATOR] Implement UnwrapStrIreplace mutator https://github.com/infection/infection/pull/1397
+- [MUTATOR] Implement UnwrapStrShuffle mutator https://github.com/infection/infection/pull/1398
+- [MUTATOR] Implement UnwrapLtrim mutator https://github.com/infection/infection/pull/1395
+- [MUTATOR] Add Ternary operator mutator  https://github.com/infection/infection/pull/1390
+- [MUTATOR] Add Flip Coalesce operator mutator  https://github.com/infection/infection/pull/1389
+
+**Changed:**
+
+- Remove redundant Coalesce Mutator and rename FlipCoalesce to Coalesce https://github.com/infection/infection/pull/1391
+
 ## [0.19.0](https://github.com/infection/infection/tree/0.19.0) (2020-10-28)
 [Full Changelog](https://github.com/infection/infection/compare/0.18.2...0.19.0)