Implement interface for local hybrids
The theoretical chemistry winter school is going on in Helsinki, and I spoke with some people there today who asked when local hybrids would become available in libxc. I guess the biggest thing would be to supplement the API to suit them, because they add the ingredient of the local exact exchange energy density to mgga functionals. They will of course also need a new driver routine. Maybe this could be done with the novel Mathematica branch?