Motor 2.1 adds support for MongoDB 4.2 features. It depends on PyMongo 3.10 or
later. Motor continues to support MongoDB 3.0 and later. Motor 2.1 also adds
support for Python 3.8.
Motor now offers experimental support for Windows when it is using the asyncio
event loop. This means it supports Windows exclusively with Python 3, either
integrating with asyncio directly or with Tornado 5 or later: starting in
version 5, Tornado uses the asyncio event loop on Python 3 by default.
For more info see the changelog: https://motor.readthedocs.io/en/2.1.0/changelog.html