  import sys
  from concurrent import futures
  
  from random import shuffle, choice
  from typing import cast, Dict, Generator, List, Tuple, TYPE_CHECKING, Union
  
  import cv2
  import numpy as np
  import numexpr as ne
  from lib.align import AlignedFace, DetectedFace
 
</s> remove from typing import Tuple, TYPE_CHECKING
 </s> add from typing import Dict, Tuple, TYPE_CHECKING
from typing import cast, Dict, Generator, List, Tuple, TYPE_CHECKING
  import sys
  from concurrent import futures
  
  from random import shuffle, choice
from typing import cast, Dict, Generator, List, Tuple, TYPE_CHECKING
  
  import cv2
  import numpy as np
  import numexpr as ne
  from lib.align import AlignedFace, DetectedFace
keep keep keep keep replace keep keep keep keep keep
 Preview - Allow mask color/opacity configuration
  - typing: lib.config
  - docs: lib.config
  - bugfix: popup_configure - keep assets on top 
lib/training/generator.py