Ok.. It's been a while. IK is in, RaycastVehicle is in. The Nuklear PR is still ongoing and will take some weeks, but don't think we have to wait for that, as it's kind of outside the "norm" for Urho features anyway, ie. no script support, and not completely flexible regarding resources.
There is the Retina Sierra fullscreen issue ( https://github.com/urho3d/Urho3D/issues/1917 ) which is kind of a bummer, but I don't foresee at least myself having time to properly investigate it until mid-summer. There's also a smaller Retina UI bug which makes UI textures bleed from the adjacent shapes, since the UI spritesheet does not have padding, but that's easily fixable either by adjusting the trouble shape UV's, or switching to nearest filtering.
So, might as well move on with the release by starting to compile the changelog. Any objections?