It shouldn't actually be too hard to implement either, as I've shown in this answer to comparing XML-files: http://softwarerecs.stackexchange.com/a/20676/14982. You could of course do this hidden, but as proof of concept my answer shows that it is not that difficult to compare/merge XML-files.
It shouldn't actually be too hard to implement either, as I've shown in this answer to comparing XML-files: http://softwarerecs.stackexchange.com/a/20676/14982. You could of course do this hidden, but as proof of concept my answer shows that it is not that difficult to compare/merge XML-files.