Update to_scipy_sparse_matrix to accept a weight keyword.
Update to_scipy_sparse_matrix to accept a weight keyword.

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