Small Bug-Fix update

This build has a fix for the Camera, preventing it from going out of the simulation space to the left and bottom, and when zooming in and out.

It has a new prompt to wait for Player input before starting the simulation, which makes the initial planetary movement more consistent.

Finally, interpolation is turned on when the timeScale is low, for better slow motion! (Except Mercury, who goes crazy if the timeScale is <.4 but bigger than the minimum.