What's Changed
* Move to pyright and fix type errors by callumforrester in https://github.com/bluesky/scanspec/pull/135
* Remove the need for uses_tagged_union deco by coretl in https://github.com/bluesky/scanspec/pull/140
* Update to latest copier and make docs nicer by coretl in https://github.com/bluesky/scanspec/pull/142
* Put pyright in strict mode by callumforrester in https://github.com/bluesky/scanspec/pull/143
**Full Changelog**: https://github.com/bluesky/scanspec/compare/0.7.2...0.7.3