Littledarwin

Fix encoding related issues on legacy environments such as Windows CMD

Latest bug fix version.

- Fixes encoding issues on Windows Terminal environments.
- Fixes timeout issues.
- Updates Antlr4 generated parser to 4.13.

**Full Changelog**: https://github.com/aliparsai/LittleDarwin/compare/0.10.7...v0.10.8

* Added Calculation of McCabe Complexity and SLOC per Method
* Added Method-Level Mutation

Added feature to calculate mutant density per method.

- Reworked Java parser to support all Java 8 syntactic features.
- Removed internal ANTLR4 runtime and added dependency on antlr4-python3-runtime package.
- Added few tests for parser.