### Added
- See past events your way. Two new settings change how events that have already
  ended are shown. **Past events** (Settings → Appearance → Agenda) lets the
  agenda — both in the app and the home-screen "Upcoming" widget — keep them as
  usual, dim them, or hide them from the list entirely. **Dim completed events**
  (Settings → Appearance) separately fades finished events in the month and week
  views. Both are off by default, an event only counts as finished once it has
  actually ended (events still in progress are never dimmed), and the lists
  update on their own as the day goes on. Thanks to @ptab for the suggestion
  ([#12]).

### Changed
- Readable titles on overlapping events. In the week and day views, events that
  overlap split a day into slim columns where the title used to be clipped to a
  character or two. The title now wraps across as many lines as the block can
  fit, and the time is hidden on those narrow blocks so the name can fill the
  space — so you can tell events apart without opening each one. Thanks to @ptab
  for the suggestion ([#13]).