* feat(api): bump marshmallow and FAB to version 3
* revert query context tests changes
* obey mypy
* fix tests
* ignore types that collide with marshmallow
* preparing for RC2
* fix tests for marshmallow 3
* typing fixes for marshmallow
* fix tests and black
* fix tests
* bump to RC3 and lint
* Test RC4
* Final 3.0.0
* Address comments, fix tests, better naming, docs
* fix test
* couple of fixes, addressing comments
* bumping marshmallow
* Switch from nosetest to pytest
Fix schedule tests
Collect pytest coverage
Move pytest config into pytest.ini
Move cov to the pytest.ini
* Append coverage for the 2nd run
* Add coverage to all commands
* Coverage only for tests
* Get coverage from 1 place
* Rename classes to be pytest compatible
* Test coverage for examples and tests
* Max diff to -1
* Explain how to run pytest for the whole project
* Do not append code coverage for the main run
* Do not run coverage on examples
Co-authored-by: bogdan kyryliuk <bogdankyryliuk@dropbox.com>