Star Trek version 0.2

Power cubes now fall at random from above
Star Trek version 0.3

Space background scrolls from right to left
Star Trek version 0.4

Borg cube added. Scrolls right from random positions from the y-axis.
Star Trek version 0.5

More borg cubes added. Background fixed.
Star Trek version 0.6

Collision detection added. Pick-ups and borg ships disappear when ship
touches them.
Star Trek version 0.7

Intel sprites added. Power sprites will (in a future version) give
health. Intel gives points.