changes from tonight's rehearsal: changes from tonight's rehearsal: - CueFader is closer to actually running the show, computes DMX levels to send. - KeyboardComposer is not a dummy. Use DMXDUMMY=1 to disable it. - Submaster: subs can now be "temporary" -- i.e. they shouldn't be saved or loaded. to save a temporary sub, make a copy of it with a proper name since the computed name will be ugly. Also, get_normalized_copy() and crossfade() methods added. linear_fade helper (shouldn't be in Submaster, probably) added too. - dmxchanedit: longer labels - cuelist1 now has some bogus data in it and some crap removed - dmxclient: now listens to the $DMXHOST and $DMXDUMMY env variables. - patchdata: now up to date with this year's show - danshow subs song{01..19}: removed. maybe we'll re-add them in an archive directory.

# super rough code

class AbstractPort:
    def __init__(self):
        pass
    def put_data(self, value):
        pass
    def get_data(self):
        pass

class Port(AbstractPort):
    "Connects from a node to exactly one node."
    def __init__(self, value=None):
        AbstractPort.__init__(self)
        self.value = value
    def put_data(self, value):
        self.value = value
    def get_data(self):
        return self.value

class MultiPort(AbstractPort):
    "Connects from a node to any number of nodes."
    def __init__(self, values=None):
        AbstractPort.__init__(self)
        self.values = values
    def put_data(self, values):
        self.values = values
    def get_data(self):
        return self.values