Version 3.0 — rebuilt from the ground up.

• Saved timers now live in a named "Timers" list instead of hidden swipe gestures.
• Everything fits the screen at once, in either orientation. No scrolling.
• Rotating the device no longer disturbs a running timer: colour, countdown and overtime all carry through.
• Durations accept 25:00, 90, 25m or 1h 30m, and the editor shows what it understood.
• Timers saved in 2.6 carry over.
