Class Encoder

>>> e=Encoder()
>>> p=optparse.OptionParser()
>>> e.optparse(p)
>>> (options, args)=p.parse_args('--FG_MM --FG_D=.5'.split())
>>> e.setoptions(options)
>>> F,P,G=e('CCCCC')
>>> print F
128.--33-1-b---i-70--ffz7-
>>> P=={'C3': 5, 'C3~C3~C3~C3': 2, 'C3~C3~C3': 3, 'C3~C3~C3~C3~C3': 1, 'C3~C3': 4}
True