Version 1.3.0

New

• Add logging server errors to Sentry
• Add category filter
• Add category types
• Add dummy screens for choosing grammar tests
• Add grammar exercise type
• Add grammar repository filters
• Add question entity
• Add question reference to test_exercise
• Add questions table
• app: Add maintenance page
• app: Style error pages better
• Insert dichotomy questions
• Insert grammar categories
• Update database models
• Update presenters for grammar categories

Fixed

• Change the questions structure
• Questions migration
• Remove duplicate questions in grammar categories
• Use category types constants