Releasing pydplace

Change version to the new version number in
- setup.cfg
- src/pydplace/__init__.py
Do platform test via tox:

tox -r

Make sure flake8 passes (configuration in setup.cfg):

flake8 src/

Commit your change of the version number:

git commit -a -m "release <VERSION>"

Create a release tag:

git tag -a v<VERSION> -m "<VERSION> release"

Release to PyPI:

rm dist/*
python setup.py clean --all
python -m build -n
twine upload dist/*

Push to GitHub:

git push origin
git push --tags origin

Increment the version number and append .dev0 to start the new development cycle:
- src/pydplace/__init__.py
- setup.cfg
Commit/push the version change:

git commit -a -m "bump version for development"
git push origin