Multiple timers

Verification

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Support adding, deleting, starting, and stopping multiple timers. Allow adding, deleting, starting, and stopping other timers while existing ones are running.

Description

Having multiple timers would be a useful addition to InfiniTime. Someone who is multitasking could set different timers for different tasks and use those timers simultaneously.

Other implementations

• Apple watchOS: Apple Watches have a touchscreen like the PineTime. The PineTime has a physical button instead of the Apple Watches' digital crown.
• Multi Timer for Pebble: Pebble watches have no touchscreen, unlike the PineTime. Pebble watches have three physical buttons compared to the PineTime's one physical button. Multi Timer has both timer and stopwatch functionality, and also handles multiple stopwatches.
• MultiTimer Pro for Samsung Galaxy Gear: Galaxy Gear watches have a touchscreen like the PineTime. Galaxy Gear watches have two physical buttons and a rotating bezel compared to the PineTime's one physical button.

This feature request is related to #950 (multiple alarms).

The issue names no files, tests, or entry points. Start by locating the existing timer implementation and reviewing the related multiple-alarms issue #950, then define the interaction and storage scope for concurrent timers. Done should include adding, deleting, starting, and stopping multiple timers while other timers continue running.