* consolidate callbacks and hooks
* ensure callbacks recieve proper arg types
* remove model from init callback events
* clean up early stopping event
* update changelog
* remove on_fit_start and on_fit_end
* fix args for on_init_start and on_init_end
* handle case where early stopping is not used
* show all callback methods
* wrap checkpoint callback logic into proper class
* fix check for main process in checkpoint callback
* move callbacks test to separate file
* refactor arg checks
* get model and call hook on same line
* define trainer_options dict in one call
* add more asserts to callback test
* added get dataloaders directly using a getter
* deleted decorator
* added prepare_data hook
* refactored dataloader init
* refactored dataloader init
* added dataloader reset flag and main loop
* added dataloader reset flag and main loop
* added dataloader reset flag and main loop
* made changes
* made changes
* made changes
* made changes
* made changes
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* made changes
* made changes
* fixed bad loaders
* fixed bad loaders
* fixed bad loaders
* fixed bad loaders
* fixed bad loaders
* fixed bad loaders
* fixed bad loaders
* fixed bad loaders
* fixed bad loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixed error in .fit with loaders
* fixes#909
* fixes#909
* bug fix
* Fixes#902
* new way of passing dataloaders
* fixed docs
* fixed codestyle to follow flake8
* allow val/test be list of dataloaders and smarter checking
* added test
* fix flake error
* fix linking to new test model
* split into multiple test
* fix naming and typo
* minor documentation changes
* remove random file
* Update trainer.py
* Update trainer.py
* Update trainer.py
* Update trainer.py
* Update trainer.py
* Update trainer.py
* better error/warning message
* final adjustments
* update CHANGELOG.md
Co-authored-by: William Falcon <waf2107@columbia.edu>