Enabled 2D images as input in CustomGenerator
Enabled 2D images as input in CustomGenerator


Former-commit-id: fb2b53c151040e0a3ea6f85690775bf40dfc2ae6
Former-commit-id: 2a5644dbecd26c8e6df7c3e86ff19a78436b7b3c
TomTranter/OpenPNM,amdouglas/OpenPNM,stadelmanma/OpenPNM,PMEAL/OpenPNM,amdouglas/OpenPNM