2.2.0

:release-date: 2021-01-19 2:30 p.m. UTC+6:00
:release-by: Asif Saif Uddin

• Fixed compatibility with django-timezone-field>=4.1.0
• Fixed deprecation warnings: 'assertEquals' in tests.
• Fixed SolarSchedule event choices i18n support.
• Updated 'es' .po file metadata
• Update 'fr' .po file metadata
• New schema migrations for SolarSchedule events choices changes in models.