Update CHANGELOG.md

CHANGELOG.md

@@ -16,12 +16,15 @@ Feature enhancements:
   Introduce realm struct to hold realm context and global object.
 - [FEATURE #89](https://github.com/jasonwilliams/boa/issues/89):
   Implement exponentiation operator. Thanks @arbroween
+- [FEATURE #47](https://github.com/jasonwilliams/boa/issues/47):
+  Add tests for comments in source code. Thanks @Emanon42
 - Demo page has been improved, new font plus change on input. Thanks @WofWca
 
 Bug fixes:
 
 - [BUG #113](https://github.com/jasonwilliams/boa/issues/113):
   Unassigned variables have default of undefined (@pop)
+- Tidy up Globals being added to Global Object. Thanks @DomParfitt
 
 # 0.4.0 (2019-09-25)