Simplify node container handling. Addresses #640
Simplify node container handling. Addresses #640

nathania/networkx,RMKD/networkx,NvanAdrichem/networkx,jtorrents/networkx,aureooms/networkx,dmoliveira/networkx,sharifulgeo/networkx,debsankha/networkx,RMKD/networkx,cmtm/networkx,sharifulgeo/networkx,jfinkels/networkx,wasade/networkx,OrkoHunter/networkx,ionanrozenfeld/networkx,chrisnatali/networkx,dhimmel/networkx,kai5263499/networkx,blublud/networkx,jakevdp/networkx,sharifulgeo/networkx,kernc/networkx,michaelpacer/networkx,kai5263499/networkx,chrisnatali/networkx,aureooms/networkx,tmilicic/networkx,ionanrozenfeld/networkx,farhaanbukhsh/networkx,kai5263499/networkx,dmoliveira/networkx,dmoliveira/networkx,dhimmel/networkx,jni/networkx,yashu-seth/networkx,jni/networkx,ghdk/networkx,harlowja/networkx,debsankha/networkx,bzero/networkx,dhimmel/networkx,jcurbelo/networkx,kernc/networkx,jtorrents/networkx,SanketDG/networkx,ltiao/networkx,ghdk/networkx,bzero/networkx,RMKD/networkx,andnovar/networkx,beni55/networkx,ionanrozenfeld/networkx,aureooms/networkx,jakevdp/networkx,debsankha/networkx,harlowja/networkx,ghdk/networkx,bzero/networkx,nathania/networkx,nathania/networkx,Sixshaman/networkx,blublud/networkx,harlowja/networkx,farhaanbukhsh/networkx,jakevdp/networkx,chrisnatali/networkx,JamesClough/networkx,jni/networkx,kernc/networkx,blublud/networkx,farhaanbukhsh/networkx,goulu/networkx