New patterns, memory optimizations, bugfixes

Added the MemoryFree library, progressiveAnts, tony (early alpha
version), unicornPoo and unicornPuke, , reduced all ints to bytes where
I could, found a few more counts to replace with sizeof()s, fixed a
boundary condition in colorByNumber(), tweaked ramdommy() to give it
more staying power, added a randomColor() helper function, and a
partridge in a pear tree.