Merge pull request #280 from tkunicki-usgs/master

first part of proper handling of "No Data"/Nan in shapefiles
parallel chunks for 4 blocks w/ help from Luke
fixed issue with code not being updated
Merge pull request #281 from jread-usgs/master

Parallels for 4 cores
updated pom dependency versions for consistency
updated CreateResultsLayerProcess to calculate and inject NSD
updated ResultsRasterProcess to utilize NSD, when present, in SCE calculation