increase speed implemented
decrease speed power down
increase/decrease speed powerups without changing ball.body.velocity - no bugs
Refactor power up and power down functions
Change BALL_VELOCITY_CHANGE to 1.2
Change item images
Reduce item drop chance
Reduce BALL_VELOCITY_CHANGE to 1.1
Change drop chance
Change drop chance
Change particle number emitted to be random
Merge pull request #62 from nsue/power-down-decrease-speed

Power down decrease speed
Merge pull request #63 from nsue/random-explosion-size

Change particle number emitted to be random
Change brick and background images
Merge pull request #68 from nsue/change-background

Change brick and background images
Add changes from previous branch
Merge branch 'change-background'

* change-background:
  Add changes from previous branch
Merge branch 'game-over-dialog' into prevent-gameover-extra-life

* game-over-dialog:
  Add game over dialog with socket score submission
Prevent extra life from being added when game is over
Revert "Prevent extra life from being added when game is over"

This reverts commit 799788f4ec1f9054155ffb2f7217058c3ac7eca9.