add renormalization trick option + benchmark notebook#68

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mminici wants to merge 2 commits intotkipf:masterfrom mminici:symm_norm_feature

+1,250-6

Commits on Sep 3, 2020

add renormalization trick option + benchmark notebook
mminici
committed

Commits on Sep 20, 2020

switched axis when computing degree matrix
mminici
committed