PEP8 import structure for transferfunction.py (standard library, third party imports, ipyvolume imports)
PEP8 import structure for transferfunction.py (standard library, third party imports, ipyvolume imports)

maartenbreddels/ipyvolume,maartenbreddels/ipyvolume,maartenbreddels/ipyvolume,maartenbreddels/ipyvolume