* Make several changes in the release and CI setup.
- Remove .travis/ directory completely.
- Update deploy.py script to tag with major.minor version
and remove the v in the tag which it didn't before.
- Fix the CircleCI cron setup.
* Update config.yml
* Use buildkit if possible.
* Use machine executor which supports buildkit.
* Remove setup docker step
* Use newer image.
* Use buildkit syntax for caching pip dependencies.
This should significantly speed up the build process by not having
to build python wheels multiple times.
* Use plain output from buildkit
* Make deploy script work with Python 2.7
Also cache python deps across builds.
* Fix more python3 things
* Install dependency in python3
* Bump to use Alpine 3.12 since 3.8 is now EOL.
* Manually install pip in all images.
* Rename all py- modules to py3- modules.
* Replace mysqldb with mysqlclient library for Mysql support in web.
* Update Postorius, Hyperkitty and django-mailman3.
Also, entrypoint script should compile i18n messages.
* Add git to postorius image.
* Also compile i18n messages in Postorius.
* Add GNU Gettext to the images.
* Do not compilemessages.
* Do not compilemessages.
* Add libffi to all Postorius images.
* Use Django less than a certain version.
* Fix the version constraint.
* Fix uwsgi configuration by using only processes.
