Merging CodeIgniter Builds

[eluser]BrandonDurham[/eluser]
What's the easiest way to merge builds of CodeIgniter? I just found out about the CodeIgniter repository and the latest build has some features that I'd love to tap into, but I'm nearly finished with the CMS that I'm currently working on. So, considering that, is there a relatively easy way to merge the new build into what I have now, or do I need to just start copying it over file by file?

Thanks!