There were some erratic fluctuations in the heading of the ships when in straight line. This has been fixed.
There is now a debug fps counter. Vsync has been disabled to be able to detect if new code has strong impact on fps.
World areas are now generated in the whole visible portion of space in the window.
Steering force was smoothed over 10 frames. Smoothing was unnecessary, it has been removed. There might be some remaining cleaning necessary.