* Bump pylint version to 2.5.3
* Add a global disable for the most common new pylint error
* Fix a bunch of files containing very few errors
* More pylint tweakage, low-hanging fruit
* More easy stuff...
* Fix more erroring files
* Fix the last couple of errors, clean pylint!
* Black
* Fix mypy issue in connectors/druid/models.py
* Typo fix in CONTRIBUTING.md
* Alter references to config.get('FOO') to use preferred config['FOO']
* Set missing configuration constants in superset/config.py
* Misc. CI fixes
* Add type annotation for FEATURE_FLATGS
* [log] New, make action log configurable and generic
* [log] Fix, missing apache license
* [log] Fix, user_id is a required parameter on event logs
* [log] Fix, Rename Action to Event
* [log] Fix, flake8
* [logger] Change all log_this decorators to new abstract one
* [logger] [docs] Simple docs to show how to override the event log
* [style] Fix, single quote to double quote
* [style] Fix, single quote to double quote
