Stac-pydantic

- Publish mypy type hints (30)
- Correct Cloud Optimized GeoTiff mime type (31)

- Add `created` and `updated` to stac common metadata, fix aliases. (28)

- Update to stac version 1.0.0-beta.2 (26)

- Update to stac version 1.0.0-beta.1 (24)

- Fix multiple inheritance of stac extensions (20)
- Properly instantiate lru_cache (found by francbartoli, 21)

- Add item model factory (13)
- Add pre-commit hooks (14)
- Add CLI for validating items (15)
- Add option to skip validation of remote extensions (16)
- Add helper function for item validation (17)