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Replaces `coalesce` with `coalesced` as coalesce is a function and `coalesced` is an arg.

Add coalesce option to transpose

Fix Docs

Improve Code docs

1) Add `import torch` to example scripts
2) replaces `index` and `value` to `indexC` and `valueC` in spmm example

Sync

Improve Docs

Cuda no cuda; Deprecation warning.

updated setup.py as per @rusty1s's  suggestion