Liquids and smoke are both fluids and share properties. It therefore makes sense to have one single fluid solver in Blender which handles all fluid simulations.
In this project I plan to add liquid simulations to the existing Mantaflow (smoke) integration. More specifically, I would like to achieve the same functionality from the Elbeem code base with Mantaflow. Besides smaller Mantaflow specific features, the novel NB FLIP will be implemented as well.