3.1.1

Added

• User actions documentation [@JanKapala, @Michal-Kolomanski]
• Logging in generation of SARSes [@Michal-Kolomanski]
• SARS generator - saving users with ID -1 to the database while they are not logged in [@Michal-Kolomanski]

Changed

• Limited SARSes deletion in the RL data extraction step [@Michal-Kolomanski]
• Test for regenerate SARSes are disabled due to the fact that they tend to freeze [@Michal-Kolomanski]

Fixed

• Details in the AE data preparation step [@Michal-Kolomanski]
• Multiprocessing in Celery task. Transition to billiard [@JanKapala, @Michal-Kolomanski]

Removed

• Invalid user actions progress bar [@Michal-Kolomanski]