add .zenodo.json to give Zenodo clearly defined metadata; closes #125
add .zenodo.json to give Zenodo clearly defined metadata; closes #125

dftlibs/xcfun,dftlibs/xcfun,robertodr/xcfun,robertodr/xcfun,dftlibs/xcfun,robertodr/xcfun,dftlibs/xcfun,robertodr/xcfun