Remove the check, if addr() method is implemented in subclasses of Fixture, as addr() has been removed.

Adapt changes from ledstrip.py and fixture.py. Use multiple processes: Each fixture has it's own process now.

BREAKS SUPPRT WITH run.py! Use [red: float, green: float, blue: float] arrays in the data array instead of Color objects, due to performance problems.

Implement [] operator for Fixture class. Implement pos() method for Fixture and LedStripFixture classes, will return the position of the given LED.

Change seperate ip and port argument to address tuple in LedStrip class. Remove get() and set() methods for LedStrip class. Adapt config.py to new LedStrip class. Fix bug in ledstrip generation in config.py

Add new address() method to the fixture class.