• Added support for Django 4.1
• Dropped support for Django < 3.2 and Python < 3.7
• Added indexes for GenericForeignKey fields in AbstractNotificationModel (see https://docs.djangoproject.com/en/4.1/ref/contrib/contenttypes/#generic-relations)
• new setting 'CACHE_TIMEOUT' to cache certain result such as "notifications.unread().count".
  (a timeout value of 0 won’t cache anything).
• #263 Fix vunerability in views
• #233 Adds methods to convert to human readable type
• Translate project all strings