message: too many dots
diff: #### Bug Fixes
  -- [Failure Lexing RegExp patterns starting with empty or "fully optional" groups.](https://github.com/SAP/chevrotain/pull/934).
  +- [Failure Lexing RegExp patterns starting with empty or "fully optional" groups](https://github.com/SAP/chevrotain/pull/934).
  - Thanks to [@jmrog](https://github.com/jmrog) :thumbsup
  ## 4.3.1 (3-18-2019)
  