Commit Briefs
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.
flush stdout after each monitor event
otherwise the output may get buffered by a pipe and it's not pretty.
print the "> " prefix only if -p is given
the prefix is nice to see, but can break the amused show | filters ... | amused load because sort(1), uniq(1) etc don't know how to strip the "> " and " " prefixes obviously.
rewrite `load' to use the new transaction messages
this allows to do stuff like amused show | some shell filtering | amused load without the dangers of races between show and load.