Synthizer

- Bind the sine generators
- Start building Python 3.11 wheels
- Update Synthizer so that setting positions or orientations to values
containing NaN will error.

- Upgrade Synthizer to 0.11.9.

- More typing fixes. This should work now.

- Add py.typed.
- Start building wheels for 3.7 and up again.

- Build Python 3.10 Windows wheels.
- Drop all Windows wheels older than 3.9. If you need these, `pip install` with
properly configured C compilers will stil work.

0.12.0 (2021-11-28)

- Support automation.
- All properties now need to use `.value = ` etc instead of just the raw
property access.
- Extract the manual from Synthizer's repo and improve it; currently there is no
GitHub pages, so you'll need to look in the repository itself.

- Error if a user passes non-finite floating point values to `syz_setD*`.
- Error if the pair of vectors to `syz_setD6` would result in a zero or non-finite cross product.