Release Checklist for PyPlanet core + contrib apps.

Main Release

Open a release ticket with the version and the release notes in a short summary.
Develop and prepare release in master branch.
Check the Travis CI build status of the master branch.
Make sure we update the version number according to Semver 2.0.0.
Update CHANGELOG.rst.
Bump version with bumpversion --new-version 0.6.0 final (this will commit the changes directly).
(Only when manually updating, not using bumpversion) Update documentation version conf.py and __init__.py in PyPlanet root folder.
Run build commands with make build and test the cli with pip installation.
Create new branch for the big releases (if major/minor update, not for bugfix):

    $ git checkout -b release/2.9.x
    $ git tag 2.9.0
    $ git push --all
    $ git push --tags

    $ make build
    $ make publish