Removed Option[] from Raster.asArray,.mutable,.force
Merge pull request #601 from lossyrob/asArray

Removed Option[] from Raster.asArray,.mutable,.force
Merge remote-tracking branch 'upstream/master' into localOpMethods
Fixing tests
Merge pull request #602 from lossyrob/asArray

Fixing tests for asArray change
Fixed asArray in DiffTask
Merge remote-tracking branch 'upstream/master' into localOpMethods
Many changes to the infrastructure regarding Raster and RasterData