ref: deae5c854b4dbefd0616838074bf5a475208fde1
parent: 07b237b10ccfd5bf95681601a6c6762c306cabea
author: qwx <devnull@localhost>
date: Tue Jun 26 06:35:23 EDT 2018
mus: fix note volume and channel selection; simplify - fix overwriting channel 10 with channel 9 - fix using channel volume instead of last volume when setting note (fixes d_doom and others) - remove useless state