plasma in python - 1.2

A demo effect using a palette in 8-bit mode to create a visually appealing experience. This program is based on C++ code written by Alex Champandard, from an article on demomaking (url: http://www.flipcode.com/archives/The_Art_of_Demomaking-Issue_04_Per_Pixel_Control.shtml).

v1.2: Saved 2-dimensional function info in separate "raw" files, for faster loading. Also made another option for pygame's Surface.blit function (pygame.BLEND_AOF) that adds 8-bit surfaces together, and wraps the color value when it goes over 255 (blit_blend_add_overflow). This allows the quick blending together of the surface blits to the screen.