RandomTree acknowledges nodeType input. closes #519
RandomTree acknowledges nodeType input. closes #519

Anaphory/beast2,tgvaughan/beast2,tgvaughan/beast2,tgvaughan/beast2,CompEvol/beast2,CompEvol/beast2,Anaphory/beast2,Anaphory/beast2,CompEvol/beast2,Anaphory/beast2,CompEvol/beast2,tgvaughan/beast2