Recent weeks I had work on a planetary chemistry. It is updated atmosphere composition code - I should call it the planetary chemical composition code now. Because it computes not only the atmosphere, but the seas/oceans and frozen ices. It performs iteration of the global climate conditions on the planet, computes equilibrium amount of gaseous, liquid and frozen substances on the surface. So now oceans also have the chemical composition: you can find exotic cases like a terra with carbon dioxide or ammonia seas, or a frigid aquaria with a neon seas. This is where the new planet classification shines: the old classification scheme would have a problems to classify such a planets.
I also had upgrade the star browser (for debug purpose, as usual - I needed a tool to find a planet with a specific conditions). Now it uses the new planet classification (3 classes are selectable - temperature, volatiles and bulk class). I also added a simple filters to find planets with a specific composition of an atmosphere and hydrosphere (not sure how to call it in general - "liquosphere"?).
I will write a blog post about this features later on.