Bump version in DESCRIPTION
Convert C code to .Call interface

 - due to dup=FALSE being deprecated in .C interface
Fix detection of invalid treatment names
Bug #31: connect components of graph using priors

 - testing remains to be done, including regression testing
Tighten auto-detection of likelihood/link
Fix error in C code

 - introduced when converting to the .Call interface
Add example to mtc.nodesplit man page
Fix rank probabilities and add test
Update NEWS and DESCRIPTION