Commit Briefs
amused monitor: allow to pass a list of event as filter
it's easier / simpler for scripts to do $ amused monitor next,prev,jump rather than $ amused monitor | egrep --line-buffered 'next|prev|jump'
change play_*() so that they return an integer
this will allow to remove the `got_stop' hack in player.c
keep the current song if load input was generated by show -p
`amused show -p' generates a listing in the form of song > current song song ... This adds an heuristic to `amused load' so that the current song can be set if it's prefixed by "> ". It's particularly useful when re-importing the state from a previous run.
add a monitor functionality
this pings all the "interesting" events to clients that issued a IMSG_CTL_MONITOR, except to the one that generated such event.