mypy complains about missing stubs or py.typed marker when importing aiotools

[KholdStare]

At the moment when using this project, mypy complains that there is not typing information available.

In my test file I did

from aiotools import VirtualClock

And got this when running mypy:

Skipping analyzing "aiotools": module is installed, but missing library stubs or py.typed marker  [import]