* Change default handling, update signatures, get existing tests to pass.
* Try running tests on ubuntu 18.04
* Roll back
* Rework check_shortcut_call tests
* Further improve check_shortcut_call tests
* Start on defaults-checks for shortcuts, get it working for test_message
* Add check_shortcut_defaults to all other shortcut tests
* Some fine tuning
* Add defaults checking for bot methods
* Missing tests for TestCallbackQuery
* Test edit_message_media with defaults & some comments
* Fix cryptography requirement
* drop debug prints
* Remove debug prints
* Another try
* Try to fix coverage & logs
* Rearrange test order
* increase coverage
* Try to fix coverage reports
* address review
* Adapt tests like in #2386
* fix CI
* fix CI
* Make pre-commit more strict
* Get pylint to read setup.cfg
* Make pylint & mypy happy aka ignore all the things
* use LogRecord.getMessage() in tests
* Make noam happy
* Update both pylint & mypy while we're at it
* Bring reqs-dev and makefile up to speed
* try making pre-commit happy
* fix jobqueue tests on the fly