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- Added optional `parameter_name` to `assert_type_or_raise`.
- Added `lcut` and `rcut`, fixed `split_in_parts`.
- Updated related tests. Full test coverage for those.
- Fixed github `FILE_URL_REGEX`, the full match included a whitespace at the end. Also made the protocol `http(s)://` optional.
- Added github `SIMPLE_URL_REGEX`, to cheaply match github urls.