chore(package): update react-codemirror to version 0.3.0
chore(package): update react-codemirror to version 0.3.0

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nteract/nteract,captainsafia/nteract,rgbkrk/nteract,jdetle/nteract,nteract/nteract,rgbkrk/nteract,nteract/nteract,0u812/nteract,captainsafia/nteract,0u812/nteract,nteract/composition,jdfreder/nteract,temogen/nteract,rgbkrk/nteract,jdetle/nteract,0u812/nteract,jdfreder/nteract,nteract/nteract,jdetle/nteract,0u812/nteract,temogen/nteract,jdfreder/nteract,rgbkrk/nteract,jdetle/nteract,rgbkrk/nteract,temogen/nteract,nteract/nteract,jdfreder/nteract,nteract/composition,captainsafia/nteract,nteract/composition,captainsafia/nteract