Tippo

Changed:
- Simplified features by removing generic `weakref` types
- Code cleanup, PEP8 conform with 88 line length
- Apply `GenericMeta` patches only if needed

Added:
- Better README

Added:
- Python 3.11 compatibility

Added:
- Add `Self` type

Added:
- `dataclass_transform`

Added:
- `SupportsGetSetItem` protocol
- `SupportsGetSetDeleteItem` protocol