Split callbacks (#849)

* add .vscode in .gitignore

* Split callbacks in individual files + add a  property to Callback for easy trainer instance access

* formatting

* Add a conda env file for quick and easy env setup to develop on PL

* Adress comments

* add fix to kth_best_model

* add some typing to callbacks

* fix typo

* add autopep8 config to pyproject.toml

* format again

* format

* fix toml

* fix toml again

* consistent max line length in all config files

* remove conda env file

* Update pytorch_lightning/callbacks/early_stopping.py

Co-Authored-By: Jirka Borovec <Borda@users.noreply.github.com>

* Update pytorch_lightning/callbacks/model_checkpoint.py

Co-Authored-By: Jirka Borovec <Borda@users.noreply.github.com>

* docstring

* Update pytorch_lightning/callbacks/model_checkpoint.py

Co-Authored-By: Jirka Borovec <Borda@users.noreply.github.com>

* Update pytorch_lightning/callbacks/model_checkpoint.py

Co-Authored-By: Jirka Borovec <Borda@users.noreply.github.com>

* fix logic error

* format

* simplify if/else

* format

* fix linting issue in changelog

* edit changelog about new callback mechanism

* fix remaining formating issue on CHANGELOG

* remove lambda function because it's compatible with pickle (used during ddp)

Co-authored-by: Jirka Borovec <Borda@users.noreply.github.com>

.gitignore

@@ -5,7 +5,7 @@ model_weights/
 app/models/
 pip-wheel-metadata/
 lightning_logs/
-
+.vscode/
 
 # Test-tube
 test_tube_logs/

.markdownlint.yml

@@ -0,0 +1,2 @@
+MD013: false  # headers with the same names
+MD024: false  # line length

.pep8speaks.yml

@@ -5,7 +5,7 @@ scanner:
     linter: pycodestyle  # Other option is flake8
 
 pycodestyle:  # Same as scanner.linter value. Other option is flake8
-    max-line-length: 100  # Default is 79 in PEP 8
+    max-line-length: 120  # Default is 79 in PEP 8
     ignore:  # Errors and warnings to ignore
         - W504  # line break after binary operator
         - E402  # module level import not at top of file