0.01: Moved from modules/clock_info.js
0.02: Fix settings page
0.03: Reported image for battery now reflects charge level
0.04: On 2v18+ firmware, we can now stop swipe events from being handled by other apps
      eg. when a clockinfo is selected, swipes won't affect swipe-down widgets
0.05: Reported image for battery is now transparent (2v18+)
0.06: When >1 clockinfo, swiping one back tries to ensure they don't display the same thing
0.07: Developer tweak: clkinfo load errors are emitted
0.08: Pass options to show(), hide() and run(), and add focus() and blur() item methods
0.09: Save clkinfo settings on kill and remove
0.10: Fix focus bug when changing focus between two clock infos
0.11: Prepend swipe listener if possible
0.12: Add drawFilledImage to allow drawing icons with a separately coloured middle