Request: Combos #119
Description
Combos are a popular feature in other keyboard firmwares like QMK and KMK which let you chord two keypresses together to perform an action. For example: press A and B together within a 50ms period and you will send C. If the timer times out, the user releases a combo key within its timeout, or the user presses another key that would not match with a chord, the original keypress will be sent instead. The timeout should be user-configurable to account for differences in dexterity, preferably defined individually for each combo.