Toolz

- Add support for Python 3.12 and PyPy 3.10
- Drop support for Python 3.5 and 3.6
- Fix typos (565, 568)
- Use codecov for coverage instead of coveralls

_**This is a pre-release**_

- Support Python 3.12
- Drop support for Python 3.5 and 3.6

- Add `apply` (411)
- Support newer Python versions--up to Python 3.11-alpha (525, 527, 533)
- Improve warning when using `toolz.compatibility` (485)
- Improve documentation (507, 524, 526, 530)
- Improve performance of `merge_with` (532)
- Improve import times (534)
- Auto-upload new releases to PyPI (536, 537)

- Support Python 3.10

- Importing `toolz` no longer warns (by importing `.compatibility`)

- Drop Python 2.7 support!
- Give deprecation warning on using `toolz.compatibility`
- Some doc fixes
- First time using auto-deployment. Fingers crossed!