0.60012 using either of the merge components with path streams appears to nullify the first item of all but the first branch
depending on the input occaisionally items other than the first also nullify but this is harder to consistently reproduce http://grasshopper3d.googlegroups.com/web/merge-nullifying.png?gsc=q3QKfgsAAAACH3VFLvTzu_EXYh5nuwIq jonathon
