I've just made public the first release NWN2Library. This is a beta release (0.1 beta 1), so still a work in progress as I work towards the non beta version. I've upload to the release files to the website today, which can be found here.
This version has support for reading from TLK and 2DA files. This should work pretty well has the Neversummer web admin tool has been using this code for quite a while. Their is also a parser for the Bioware Neverwinter Nights 2 custom GUI xml files (Minor gripe, though I say XML, they are not really XML) . This probably the area that will see most work before the final 0.1 release.