Added
- Added coverage metric for Codecov
- Added coverage for `WHERE`, `ENUM`, max line/comment diagnostics and multilines
- Adds Windows CI
Fixed
- Fixed global `sort_keywords` option not propagating during parsing on Windows
([36](https://github.com/fortran-lang/fortls/issues/36))
- Fixed unittests not propagating debugger state
([35](https://github.com/fortran-lang/fortls/issues/35))