0.01: Initial Version: Display at under 30% battery
0.02: Display while charging
0.03: Do not clear outside of widget bar
0.04: Fork `widminbat`->`widminbate`. Only use the system theme foreground
	colour.
0.05: Fix broken fork which removed the `update` function
0.06: The widget now shows only when battery level is 10% or lower
0.07: The widget now shows when battery level is 20% or lower
