### Fixed
- Calendula can now be set as your default calendar app. It registers the
  calendar-app intent filters the system uses, so it appears in the chooser when
  you tap a date in a launcher or clock — and opening one takes you straight to
  that day. Android has no way for an app to make itself the default, so you pick
  it once from the system picker. Thanks to @abrossimow for the report ([#9]).