v0.9.0

Changed

• Revert to TypeVar S being invariant. This leads to some issues with
  cached.prop decorator. However, the use of covariant TypeVar was a hack.
  Instead, it is better in these cases to decorate with @property on top of
  @cached.meth. mypy/pyright deal with property in a special way.
• To better work with the above, single parameter methods are caached using only
  the method name, and no parameters.

Full Changelog: v0.8.1...v0.9.0