Status Report 5

Ye Qin: Made prototype classes for habitat and engine implementations. Going to start integration into physics engine.

Sean: Added planet spin, can show and hide labels on interface, program pausing, tweaks to how recentreing happens.

Patrick: Fine-tuning physics stability, looking at how to package program as a single exe.

Things that need to be done for demo: implement habitat, get GUI looking intuitive (and hopefully fancy), and iron out some kinks in physics engine integration (multithread it, be able to increase max step size).