Merge pull request #293 from hjkgrp/rolan701-patch-3

big structgen merge, rollback here if stuff breaks

molSimplify/Classes/mol3D.py

@@ -12,6 +12,7 @@
 import time
 import xml.etree.ElementTree as ET
 import numpy as np
+import networkx as nx
 try:
     from openbabel import openbabel  # version 3 style import
 except ImportError: