* find & replace all FloatTensors to Tensor
* apply formatting
* Update torch.FloatTensor to torch.Tensor in the remaining files
* formatting
* Fix the rest of the places where FloatTensor is used as well as in documentation
* formatting
* Update new file from FloatTensor to Tensor
* Change step_offset scheduler docstrings
* Mention it may be needed by some models
* More docstrings
These ones failed literal S&R because I performed it case-sensitive
which is fun.
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Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>