final cleanup for v0.8.0

[Borda]

What does this PR do?

rest final version, add link to docs

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[codecov]

Codecov Report

Merging #2181 into master will decrease coverage by 0%.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #2181   +/-   ##
======================================
- Coverage      88%     88%   -0%     
======================================
  Files          70      70           
  Lines        5421    5420    -1     
======================================
- Hits         4761    4760    -1     
  Misses        660     660           

[mergify]

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[jeremyjordan]

There are a number of places that reference changing the epoch count to starting at 0 in v0.8, are we still doing this?

https://github.com/PyTorchLightning/pytorch-lightning/blob/761252be78ba573ad1f5c700190eb89b13e41e99/pytorch_lightning/callbacks/gradient_accumulation_scheduler.py#L60

[williamFalcon]

yes! this should be done. @Borda mind updating?

[Borda]

There are a number of places that reference changing the epoch count to starting at 0 in v0.8, are we still doing this?

https://github.com/PyTorchLightning/pytorch-lightning/blob/761252be78ba573ad1f5c700190eb89b13e41e99/pytorch_lightning/callbacks/gradient_accumulation_scheduler.py#L60

yes! this should be done. @Borda mind updating?

fixing in separate PR #2206

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