Updated volume.world2model and volume.model2world to return the same type of input it was given (e.g. if given a 2D array, return a 2D array, if given 2 floats, return 2 floats)
Updated volume.world2model and volume.model2world to return the same type of input it was given (e.g. if given a 2D array, return a 2D array, if given 2 floats, return 2 floats)

joferkington/python-geoprobe