Reginald

- Enable pydantic 'strict' mode for input parsing.
- Fixed validator error message printing.
- Have __init__.py be 'single-source-of-truth' for version number.
- Remove any non-error printing.
- c.funcpack:
- Align defines.
- Align _UNPACK macro new line escapes.
- Fixed small formatting/indentation errors.

**Full Changelog**: https://github.com/schilkp/reginald/compare/v0.0.2...v0.0.3

Changes:
- Removed 'more-itertools' dependency
- Slight CLI improvements.
- c.funcpack:
- Changed macro / struct / function naming
- Moved back to unpack macro
- Added options to disable parts of output
- Added option to generate include(s) of specified headers

**Full Changelog**: https://github.com/schilkp/reginald/compare/v0.0.1...v0.0.2