follow order of imports

- python standard library
- third party
- DAMASK internal

python/damask/_colormap.py

@@ -2,6 +2,10 @@ import os
 import json
 import functools
 import colorsys
+from pathlib import Path
+from typing import Sequence, Union, Optional, List, TextIO
+from io import TextIOWrapper
+
 
 import numpy as np
 import matplotlib as mpl
@@ -14,10 +18,6 @@ from PIL import Image
 from . import util
 from . import Table
 
-from typing import Sequence, Union, Optional, List, TextIO
-from io import TextIOWrapper
-import pathlib
-
 _eps   = 216./24389.
 _kappa = 24389./27.
 _ref_white = np.array([.95047, 1.00000, 1.08883])                                                   # Observer = 2, Illuminant = D65