I am working on a GitHub pull request viewer that displays changes using a semantic diff, and therefore has some more advanced whitespace handling behavior than just ignoring leading or trailing whitespace. I tried it with this PR:

https://app.semanticdiff.com/django-money/django-money/pull/...

It doesn't make a huge difference, but it filters out changes like the added line break in "if value: value = str(value)" nicely. I haven't announced the project yet, but maybe someone will find it useful :-)