Added preset calls, state and position calls

0.1.x release notes

Added following functions for presets:

def get_preset(self):
def set_preset(self, value):
preset = property(get_preset, set_preset)

def get_state(self):
def set_state(self, value=True):
state = property(get_state, set_state)

def get_position(self):
def set_position(self, value):
position = property(get_position, set_position)

0.1.1 and 0.1.2 fix some issues on the preset calls