ImageGrid: Apply changes to individual images

Out:

/home/docs/checkouts/readthedocs.org/user_builds/seaborn-image/envs/v0.4.0/lib/python3.7/_collections_abc.py:841: MatplotlibDeprecationWarning:
The validate_legend_loc function was deprecated in Matplotlib 3.3 and will be removed two minor releases later.
  self[key] = other[key]

import seaborn_image as isns

# load images
pol = isns.load_image("polymer")
pl = isns.load_image("fluorescence")
pol_out = isns.load_image("polymer outliers")

g = isns.ImageGrid(
    [pol, pl, pol_out], robust=[False, False, True], perc=[None, None, (2, 99.9)]
)