Require development openmm (6.3) which ParmEd needs
Require development openmm (6.3) which ParmEd needs

Former-commit-id: ba3c77a724b175f62e53ae357ea271892847f3d4
mpharrigan/conda-recipes,jchodera/conda-recipes,swails/conda-recipes,peastman/conda-recipes,mpharrigan/conda-recipes,rmcgibbo/conda-recipes,cwehmeyer/conda-recipes,marscher/omnia-conda-recipes,cwehmeyer/conda-recipes,peastman/conda-recipes,marscher/omnia-conda-recipes,rmcgibbo/conda-recipes,jchodera/conda-recipes,omnia-md/conda-recipes,swails/conda-recipes,danielparton/omnia-md-conda-recipes,jchodera/conda-recipes,rmcgibbo/conda-recipes,cwehmeyer/conda-recipes,mpharrigan/conda-recipes,swails/conda-recipes,omnia-md/conda-recipes,danielparton/omnia-md-conda-recipes,swails/conda-recipes,peastman/conda-recipes,omnia-md/conda-recipes,cwehmeyer/conda-recipes,marscher/omnia-conda-recipes,rmcgibbo/conda-recipes,marscher/omnia-conda-recipes,jchodera/conda-recipes