Support of concatenation for SparseTensor

[jasperhyp]

Can SparseTensor be adapted so that torch.cat() can be used, or can a concatenation function be added for SparseTensor?

[rusty1s]

There exists torch_sparse.cat, which can be used similarly to torch.cat. Hope this helps!

[jasperhyp]

Thanks so much! I unfortunately did not find the documentation and the intro in GitHub repo does not contain this function...