- Update to 1.46.0:
* Drop Support for Python 3.5 and 3.6 #pr487 #pr568
* Add pyproject.toml and switch to poetry for development only
#pr513
* tests: no longer include flake8 in the test suite, it has to
be run separately now #pr571
* Start adding some type annotations and integrate mypy #pr488
* easyid3: map easyid3 grouping to TIT1 #pr505
* mutagen-inspect: add usage documentation #pr540
* wave: Fix bitrate calculation #pr566
* Increase buffer size for rewriting files from 256K to 1M to
improve performance with network shares #pr570
* Other changes: code cleanup #pr514, typos #pr565, remove upper
limit for python version #pr579