Refscan

- Display horizontal lines in console output to delimit major execution stages
- Show `refscan` version (instead of LinkML runtime version) in console output

**Full Changelog**: https://github.com/microbiomedata/refscan/compare/v0.1.1...v0.1.2

- Introduced `--version` CLI option
- Added lots of documentation to `README.md`

**Full Changelog**: https://github.com/microbiomedata/refscan/compare/v0.1.0...v0.1.1

Initial release, prompted by my desire to know whether publishing a release causes GitHub Actions to build a Python package and publish it to PyPI. 🤞

**Full Changelog**: https://github.com/microbiomedata/refscan/commits/v0.1.0