Support CSS3 column-break-before
Ignoring the references in the spec to interacting with page breaks (since we don't yet support @page, see bug 15548), we should support column-break-* properties for columns. See attached test case.
Created attachment 16715 [details]
While bug 40531 seems to a duplicate of this, that one has already been fixed. Eric's test case is working correctly as well, so implementation has likely been fixed by r61065.