Changelog for kmonad-0.4.2

Changelog

A log of all notable changes to KMonad.

The format is based on Keep a Changelog

Added around-next-single, a variant of around-next that will release its context on any change, as opposed to only on the release of the 'arounded' button.
Added default compose sequence for Ü
Added systemd user unit
Added runit startup script
Added short delay in startup
Added macOS 11.0 support
Added a sticky-key
Expanded documentation
Added --version (-V) flag
Added +, for "add a cedilla"
Added :timeout-button keyword to tap-hold-next and tap-hold-next-release, so that they can switch to a button other than the hold button when the timeout expires.
Added openrc startup script

Reorganized codebase
The multi-tap key now immediately taps the current key when another key is pressed during tapping.