Now that I've found a bit more time to program I'm glad to say I'm getting quite some stuff done. Unfortunately not on the 4e4 entry though :D.

I've been working on a system identification library for the past week. It's going ok, but it's difficult to test since I only have a single system myself.

Also I've been able to add drag-and-drop onto the Daedalus engine. So now I can drop model files into a viewer and stuff like that!