Merge remote-tracking branch 'origin/master'

Ready v3.2 release.

Ready v2.5 release.

Improve typing declarations. #75

Small docstring improvements.
Ready 2.4 release.

Update documentation index.

Merge remote-tracking branch 'origin/master'

Add event system.

Update README, and API documentation.

Temporarily roll back integrating and aliasing the dataclass decorator.

maintenance release

Ready 1.3 release.