At the moment we will only be focusing on liquid simulation effects. The Blender Python API for addons works well with liquid simulation because there are easy ways to import the liquid data which are just Blender meshes. As far as I know, there is not a way for an addon to import the type of data required for fire/smoke rendering.
To avoid derailing this thread about Mantaflow, specific questions about the FLIP Fluids addon can be asked in this thread: https://blenderartists.org/t/flip-fluids-addon-a-liquid-fluid-simulation-tool-for-blender