Previously we were only loading "official" checkers that had been added
to syntastic. Now we load any checker that is in the right directory.
This allows anyone to add custom checkers to any filetype that uses
`SyntasticLoadChecker()`
The advantage to this is that no 3rd party modules are required. People
new to Python probably won't have flake8/pyflakes/pylint installed. This
will get them basic syntax checking (no linting) out of the box.
This is needed to handle compound filetypes since we cant imply the
location of the syntax checker file from the filetype.
e.g. we want to load `syntax_checkers/python/pylint.vim`, but the
filetype is `python.django`. Previously this was causing `runtime
syntax_checkers/python.django/pylint.vim` to be executed.
The parameter `g:syntastic_python_checker_args` can be used to pass additional
arguments to the Python syntax checker. Example configuration:
let g:syntastic_python_checker = "flake8"
let g:syntastic_python_checker_args = "--ignore=E501 --max-complexity=10"
Define a user-configurable variable g:syntastic_python_checker and
otherwise default to an available checker.
Make the highlighting catch all pyflakes errors
Add a header to the file
Make the errorformat handle columns provided by pep8 through flake8
