Added correct_elevtions.py that can enforce no zero slopes and a minimum
elevation that is projected back upsegment using either slope or the minimum
slope if slope == 0.

Note that this works on the GWV MAT files.

Added an ipython notebook that identifies circular routing from an SFR file as input
Added Consolidate_conductance.py to try and (working on a MAT1 file) consolidate conductance all into the cell with the greatest width (Daniel's advice) and then knock the others down to bedKmin value from the input.

Had to edit the writing of output to prevent SFR output from overwriting the conductances from the MAT1 file.
important bugfix for Consolidate_conductance.py

setting K to be (thick*COND)/Width so length must equal 1.0
Merge pull request #69 from mnfienen/classy

Classy