After several months of working hard on the game, it is finally completed. Though, I may plan on adding a special zone at some point, and if I do, it won't be any time soon. If I don't add it, then this will be the final version.
The game (more specifically, the first two zones) have went through many changes since the demo version was released, so if I were you, I would start a brand new game rather than continue from where you left off (if you played through the demo, that is). I lowered the amount of shine sprites per level from three to two, so now there are a total of 75 shine sprites to collect instead of whatever number I had planned before. If there are any glitches or bugs or weird stuff, please let me know. I also added level information and boss strategies on the page, so feel free to check those out.