K 10 svn:author V 6 kevans K 8 svn:date V 27 2019-12-17T03:30:49.019568Z K 7 svn:log V 296 kbd: const'ify a couple of keyboard_driver fields Nothing modifies these things, but const'ify out of an abundance of caution. If we could const'ify the definition in each keyboard driver, I likely would- improper mutations here can lead to misbehavior or slightly more annoying to debug state. END