Simplug

- ⬆️ Drop python3.7 support

**Full Changelog**: https://github.com/pwwang/simplug/compare/0.2.3...0.3.0

- ⬆️ Upgrade importlib-metadata to v6
- 👷 Use latest actions in CI

**Full Changelog**: https://github.com/pwwang/simplug/compare/0.2.2...0.2.3

- [🚑 Fix __plugin arg with SimplugResult.TRY_SINGLE](https://github.com/pwwang/simplug/commit/b22ba1d0ad9407e0933e61813a2ca977a9edc027)

**Full Changelog**: https://github.com/pwwang/simplug/compare/0.2.1...0.2.2

- ✨ Support SimplugResult.SINGLE

**Full Changelog**: https://github.com/pwwang/simplug/compare/0.2.0...0.2.1

- 💥Merge `result` and `collect` for spec

**Full Changelog**: https://github.com/pwwang/simplug/compare/0.1.5...0.2.0

- ✨ Add `collect` as callback to collect results
- 💥 Change exclude to only for `load_entrypoints`

**Full Changelog**: https://github.com/pwwang/simplug/compare/0.1.4...0.1.5