Hwrclassy

In the accumulate... method (SFRSegmentsAll class), I finished populating the defaultdict(dict) allReaches.  The first key is the segment number, the second key is the reach number, the value is a reach object.  allSegs dictionary also is keyed by segment number and its value is a segment object.  These two dictionaries in SFRSegmentsAll class should pass everything needed to write the output files.  Note, the values loaded into the reach object still are not right... just trying to get through the bookkeeping!   HWR