Pipen-filters

- deps: bump pipen to 0.15

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.13.1...0.14.0

- docs: add API documentation

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.13.0...0.13.1

- deps: bump pipen to 0.14.6
- ci: update GitHub Actions to use actions/checkoutv4 and actions/setup-python to v5
- feat: allow to ignore extensions for path splitting filters

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.12.0...0.13.0

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.9.0...0.10.0

- deps: bump pipen to 0.14
- deops: drop python3.8 support

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.11.0...0.12.0

- deps: bump pipen to 0.13
- ci: add python3.11 to CI

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.10.1...0.11.0