Rename ChipSeq to WaveGenerator
New sample input file - not yet being read.
Using an optimized method to find sigma - fewer iterations required
(should take 7 iterations on average, instead of 300)
Remove Joins on threads, as they don't seem to terminate otherwise.
Remove the @staticmethod tag... yet again.
Clean up on WaveGenerator close process - threads and processes now seem
to termate cleanly.
New test for find best sigma method.