Commentjson

Summary

Fixes the compatibility issue with lark-parser after a new version was released.

Also fixes tests for Windows.

Bugs Fixed
* 32 - Latest lark-parser isn't compatible with commentjson

Summary

Fixes unicode handling related issues by making the handling logic completely the same as that in `json` package.

Also, we now test commentjson against `json` package's test suite to test for compatibility of API and functionality.

Bugs Fixed
* 23 - Fix unicode handling related issue

Summary

lark-parser's latest release caused a bug. This minor release fixes that bug.

Bugs Fixed
* 25 - AssertionError caused by lark-parser==0.7.2

Summary

This release implements a proper parser (using [lark](https://github.com/lark-parser/lark)), replacing the old implementation that used a complex regular expression that didn't handle all the cases.

**Note:** Also, support for Python 2.6 was dropped looking at the usage data of commentjson with Python 2.6 on [pypistats](https://pypistats.org/packages/commentjson).

Bugs Fixed
* 4 10 16 22 - multiple unhandled cases of parsing comments
* 3 - tests are run against Windows and OSX as well