v1.4.1
release v1.4.1, updating classifiers and python_requires in setup.py … …(#657) * release v1.4.1, fixing python_requires and classiers in setup.py * drop Python 3.7 test cases * Drop Python 3.7 tests from Appveyor as well * Remove Python 3.7 entries in pyproject.toml Co-authored-by: Ralf Gommers <ralf.gommers@gmail.com>