Update to CodeMirror 4.2.
Review Request #5852 — Created May 21, 2014 and submitted
We've been running CodeMirror 3.20, but there's been quite a few
releases since then. These have focused on speed, bug fixes,
compatibility, and a bunch of things we honestly don't care about right
Tested various Markdown formatting and list continuation.
Tested auto-growing the text field for the fields that use that,
and tested places like the comment dialog.
Note that I've left out the new minified JS for CodeMirror 4.2 from
the review request, but it's in the commit.
This is a review from Review Bot. Tool: Pyflakes Processed Files: reviewboard/staticbundles.py Ignored Files: reviewboard/static/lib/js/README.codemirror reviewboard/static/lib/js/codemirror-3.20.min.js