Update CHANGELOG.md

Author: thomashoneyman

CHANGELOG.md

@@ -10,6 +10,10 @@ New features:
 
 Bugfixes:
 
+Other improvements:
+
+## [v6.0.1](https://github.com/purescript-contrib/purescript-string-parsers/releases/tag/v6.0.1) - 2021-05-11
+
 Other improvements:
 - Fix transitive dependencies errors found by Spago 0.20 (#71 by @milesfrain)
 
@@ -22,8 +26,6 @@ Breaking changes:
 New features:
 - Added a Monoid instance for Parser (#58)
 
-Bugfixes:
-
 Other improvements:
 - Changed `ParseError` from `data` to a `newtype` (#60)
 - Added usage examples to test/Examples.purs (#52)