GitLab

* Change ; fix corner cases in issue20

* Change recvfrom to recv

* Remove name args in register/sendto/update_edge/recvfrom

* Support anonymous repr

* Test anonymous edge repr

* Test node states with both anonymous and explicit reprs

cleaning and documentation

Initial example file for ginipath

* add reduce_msg related api to dgl graph

* add reduce_sum, switch backend from numpy to pytorch

* update gat gcn to use reduce msg api

* remove reduce_sum

* add built-in reduce functions

* cdgnn example & minor fixes in dgl/graph.py

* incomplete TreeLSTM

* add data preprocess of SST

* fix nx_SST.py

* TreeLSTM completed

Example GCN and GAT model

Tensor

list aliasing bug

updates to support nx 2.1