Draws the bars using fillRect() and drawRect()
Added BubbleSortThread class
BubbleSort now visualizes the sorting
added optimized Bubble Sort code
Added BubbleSortThread and SortThread classes
BubbleSortThread now inherits from SortThread
Added empty classes for all of the sorting algorithms
Removed any code that draws using Pixel objects
merged rect-draw with master
added the option to draw the bars with a hue based on the value each bar represents