Source changes.

DroneVideo: Changed OpenCV bottom Thresholding value, from 150 to 60.

Molotov: Class now extends Thread. This is in an effort to allow
simultaenous control of the drone, while capturing a video feed.
Introduced a fly() method which is intended to be a predetermined flight
plan.

Physics: Introduced G (gravity) constant, update Fg() method to take
advantage of this.

Visionary: Removed all angle debugging from the do_stuff() method.
Method now returns void, and Object reference passing takes care of
returning the edited Mat. Corrected the point co-ordinates that draw the
circles in Core.circle()
Changed class name.

Refactored AudioShit to Audio.