Fixed warnings with "<<" operator when loading
Fixed warnings with "<<" operator when loading

I was getting these warnings:

DeprecationWarning: Operator '<<' is deprecated, use '<<=' instead

Changing them to <<= seems to have fixed the problem.
tmilicic/networkx,debsankha/networkx,RMKD/networkx,kernc/networkx,chrisnatali/networkx,farhaanbukhsh/networkx,yashu-seth/networkx,bzero/networkx,bzero/networkx,ghdk/networkx,beni55/networkx,dmoliveira/networkx,dhimmel/networkx,sharifulgeo/networkx,goulu/networkx,farhaanbukhsh/networkx,aureooms/networkx,nathania/networkx,cmtm/networkx,dmoliveira/networkx,kernc/networkx,chrisnatali/networkx,NvanAdrichem/networkx,ghdk/networkx,dhimmel/networkx,farhaanbukhsh/networkx,ionanrozenfeld/networkx,jakevdp/networkx,RMKD/networkx,bzero/networkx,debsankha/networkx,harlowja/networkx,dhimmel/networkx,blublud/networkx,chrisnatali/networkx,kernc/networkx,dmoliveira/networkx,aureooms/networkx,sharifulgeo/networkx,RMKD/networkx,debsankha/networkx,nathania/networkx,harlowja/networkx,jakevdp/networkx,jni/networkx,blublud/networkx,JamesClough/networkx,jakevdp/networkx,nathania/networkx,ionanrozenfeld/networkx,ltiao/networkx,ionanrozenfeld/networkx,jni/networkx,jcurbelo/networkx,Sixshaman/networkx,wasade/networkx,andnovar/networkx,ghdk/networkx,sharifulgeo/networkx,aureooms/networkx,OrkoHunter/networkx,michaelpacer/networkx,jfinkels/networkx,harlowja/networkx,SanketDG/networkx,jni/networkx,blublud/networkx