bumped development status to Production/Stable
Merge branch 'master' of github.com:Yelp/mrjob into v0.4.1-release
more pep8
pyflakes fix
removed incorrect and unnecessary comment
fix comment typo
updated doc links for new version
updated CHANGES.txt
renamed check_hadoop_input_paths to check_input_paths, made switches consistent
update test to use new switch name (--no-check-input-paths)
Merge pull request #757 from davidmarin/v0.4.1-release

v0.4.1 release