Constants : Added minus one.

core: calling InitGame() at the first tick of an entity. InitDraw is still uncalled yet
fixed mrpigeon and orbital accordingly

disabled until the engine code itself is ported to SDL2.

- fixed 1270 CR characters
 - fixed 56 trailing spaces
 - fixed 5085 tabs

Useage :
- Link action to key :
Input::LinkActionToKey(ACTION_TYPE Action, struct Key Button);
Input::UnlinkAction(ACTION_TYPE Action);
- Query action directly :
Input::GetStatus(ACTION_TYPE Action);
Input::WasPressed(ACTION_TYPE Action);
Input::WasReleased(ACTION_TYPE Action);

Also works with raw button, but not advised :
Input::GetStatus(Key Button);
Input::WasPressed(Key Button);
Input::WasReleased(Key Button);

Added Escape button in to quit Orbital.
Added Camera control with some little damping sweetness in Camera logic in main Tick.
First Commit \o/

reuse the linear operations in quaternions. Also mark some constructors
explicit to better spot coding errors.

button changes.