pywin32 does not publish a python3 wheel, breaking pypiwin32

I wasn't sure where to post this, since pypiwin32 doesn't seem to have its own home, but pypiwin32 introduced a dependency on pywin32 which either never has, or stopped providing python 3 wheels. This means you cannot install the latest into a python 3 environment.

`` Collecting pywin32>=223 (from pypiwin32->pyinstaller)

Could not find a version that satisfies the requirement pywin32>=223 (from pypiwin32->pyinstaller) (from versions: )

No matching distribution found for pywin32>=223 (from pypiwin32->pyinstaller) ``

该提问来源于开源项目：mhammond/pywin32