Optimization (inference match result): regenerate parser and update changelog

Author: Mingun

CHANGELOG.md

@@ -14,6 +14,8 @@ Released: TBD
   from the `options.grammarSource` property. That property can contain arbitrary
   data,for example, path to the currently parsed file.
   [@Mingun](https://github.com/peggyjs/peggy/pull/95)
+- several optimizations in the generator. Generated parsers now more fast and small
+  [@Mingun](https://github.com/peggyjs/peggy/pull/118)
 
 ### Bug fixes