I refactored ExtendedWrapper to take care of more of the replicated code appearing in the various PJSE wrappers. It's the first time I've used Generics and it wasn't fun getting the Types to play nicely together. And Inge had fun spotting where I'd removed code a little to haphazzardly. Hopefully it's all working nicely again now.
Probably the most significant change was that entries in a BCON are now "BconItems" rather than "shorts". BconItems should behave exactly like shorts, however. Pretty much.