test_tiff_file_format: Added test for get_multipage_tiff_shape_dtype from tiff_file_format. This fixes #125.
test_tiff_file_format: Added test for get_multipage_tiff_shape_dtype_transformed from tiff_file_format. This fixes #126.
test_tiff_file_format: Added test for get_multipage_tiff_shape_dtype from tiff_file_format. This fixes #127.
test_tiff_file_format: Added test for convert_tiffs from tiff_file_format. This fixes #128.