A quick fix for some bugs and the first power-ups

Added:

• Power-ups
  • There is a 10% chance when breaking a block that a power-up will spawn
  • You can get the powerup by catching it with your paddle
  • You can't see what powerup you get, it's randomly chosen
  • The power-ups added are: 
    • Life: Grants you one extra life
    • Long: Increases the width of your paddle by 1/2 for 10 seconds
    • I plan on adding more in the future

Bugs Fixed:

• If you have the game sped up and complete a level, the game will still be sped up
  
• The colliders of the bricks are still on while the particles are playing

Known Bugs:

• If you get 2x long in a row, the paddle will go to its standard form to soon
• When power-ups hit the bottom, they stay there till you lose a life or advance to the next level
• The timer for 'long' will appear for a split second when loading a level