Move general use gyro function get_sub to Submaster, make global Submasters object - gyro's error subs now look like normal subs since they might reload and turn into good subs. - Also, add Submaster.fullsub which helps you make subs from channel names.

# Abstract UI widgets

class UI(Something):
    pass

class Scale(UI):
    def __init__(self, start, stop, res=0.001):
        pass

""" unfinished
class Button(UI):
    def __init__(self, etc)
"""