The kwargs value is passed to the get_latent and get_print functions

Return the default gridSize and compression for the field 9.309 if not provided (0.20mm and uncompressed)

The NISTf.get_minutiae() function returns a empty AnnotationList instead of raising an Exception if no minutiae data is found

Add the function hash() to return the md5 of the file written to disk (the NIST object beeing cleaned before the calculation of the hash)