v1.3

New features (not complete)

• management of user submissions to homework assignments
• better exception handling via exception_handler gem

Changes (not complete)

• content will be transferred to an archived user when content creator's account is deleted, thus the content can still be accessed
• change of default order of media related to lessons
• upgrade to Ruby 2.7.2 and Rails 6.0.3.4

Bug fixes (not complete)

• #77 get rid of cookie same site attribute warnings
• #74 prevent empty locales from crashing the rendering