Add some advice for how to clean up your master branch of erroneous commits that
have not been pushed to your remote fork.
Strip leading whitespace to make refArgIsWide match on darwin
Update based on Kyle's comments
Merge pull request #684 from lydia-duncan/addGitAdvice

Git master branch fix advice [reviewed by Kyle]

Add some advice for how to clean up your master branch of erroneous commits
that have not been pushed to your remote fork.
Parallel addition of indices while element accesses occur simultaneously is unsafe in our implementation of DefaultAssoaciative.
This is because a resize will invalidate references to elements previously accessed.
This test cannot be made to fail deterministically, so instead of becoming a future
it will be removed.
Merge pull request #687 from benharsh/parsafe-add-fix

Remove parSafeAdd as a test
Merge pull request #685 from Kyle-B/kb-fix-darwin-refArgIsWide

Strip leading whitespace to make refArgIsWide match on darwin

`wc -l` has leading whitespace on OSX, everything matches once it is removed.