refactor(label): Throw exception with small maxlen
refactor(label): Throw exception with small maxlen

This now makes label-maxlen < len(ellipsis) (= 3) a fatal error
disabling the whole module that uses the offending label

jaagr/lemonbuddy,jaagr/polybar,jaagr/polybar,jaagr/lemonbuddy,jaagr/lemonbuddy,jaagr/polybar