v0.20.0

Added

• Widget appearance settings (Settings > Widgets): the home-screen agenda and
  month widgets can now use their own theme (Follow app, System, Light, Dark, or
  AMOLED) independent of the app theme, and an optional translucent background
  that lets the wallpaper show through. Existing widgets keep following the app
  theme until changed.

Changed

• The Settings screen is now organized into collapsible sections. It opens with
  General expanded and the rest collapsed, so it is shorter and easier to scan;
  tap a section header to expand or collapse it.
• Settings sections reordered: Widgets now sits below Notifications.
• Month scroll style moved into the General section, just below Default view.
• The month view now defaults to continuous (endless vertical scroll) instead of
  paged. Switch back any time in Settings > General > Month scroll style.
• Week can now start on any day, not just Sunday, Monday, or Saturday.
• The mini-month panel (the split view in Week, 3-Day, Day, and Schedule) now
  changes months by swiping left or right instead of arrow buttons, and
  switching months moves the view to the first of that month.

Fixed

• Deleting a single occurrence of a repeating event ("this event only") no
  longer removes the whole series. The other occurrences now stay.
• Editing a single occurrence of a repeating event ("this event only") no
  longer removes the whole series. Only that occurrence changes; the rest
  stay. The edited occurrence becomes its own one-off event.
• A repeating event with an end date now stops on the correct day in time zones
  other than UTC. The final occurrence on the end date is no longer dropped.
• Editing a repeating event no longer changes its stored time zone to the
  device's. An event created in (or imported from) another time zone keeps its
  original zone, so its later occurrences stay put instead of shifting.
• Saving an event whose end is before its start is now rejected instead of
  silently storing an inverted or zero-length time range.
• Editing "this and all following" on a repeating event that recurs on specific
  weekdays (for example an imported every-Monday-and-Wednesday series) now keeps
  those weekdays on the later occurrences instead of repeating every day.
• A delete or drag-to-reschedule that the calendar storage rejects no longer
  looks like it worked: the event stays visible (delete) or snaps back to its
  original time (drag) instead of silently appearing to change.
• A cancelled occurrence synced from another calendar (for example an event
  cancelled in Google Calendar) is now hidden from the calendar views, search,
  and widgets instead of lingering struck-through.
• Opening a malformed timed event whose stored end equals its start (for
  example a zero-length row from an import) no longer leaves the editor stuck.
  Its end is shown as the default event duration so it can be edited and saved.