Allow nodes specification in averge_degree_correlation. Addresses #522
Allow nodes specification in averge_degree_correlation.
Addresses #522

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