making sure that converted and merged trees are TYPECHECKED
making sure that converted and merged trees are TYPECHECKED

DavidDudson/scalameta,xeno-by/scalameta,xeno-by/scalameta,scalameta/scalameta,MasseGuillaume/scalameta,MasseGuillaume/scalameta,MasseGuillaume/scalameta,olafurpg/scalameta,Dveim/scalameta,scalameta/scalameta,scalameta/scalameta,olafurpg/scalameta,DavidDudson/scalameta,scalameta/scalameta,xeno-by/scalameta,olafurpg/scalameta,scalameta/scalameta