make language optional
make language optional

jdfreder/nteract,nteract/nteract,nteract/composition,rgbkrk/nteract,nteract/nteract,jdfreder/nteract,jdetle/nteract,captainsafia/nteract,captainsafia/nteract,jdetle/nteract,jdfreder/nteract,captainsafia/nteract,nteract/nteract,rgbkrk/nteract,rgbkrk/nteract,nteract/nteract,rgbkrk/nteract,jdetle/nteract,captainsafia/nteract,nteract/composition,nteract/composition,jdetle/nteract,rgbkrk/nteract,jdfreder/nteract,nteract/nteract