enable negative values in TShape (#125)
enable negative values in TShape (#125)


piiswrong/nnvm,imai-lm/nnvm,imai-lm/nnvm,piiswrong/nnvm,ZihengJiang/nnvm,ZihengJiang/nnvm,imai-lm/nnvm,piiswrong/nnvm,ZihengJiang/nnvm