[0.0.4] Post-jam improvements, and a preview

It's been awhile! I have an entirely separate mode in progress, but finding less and less time to actually complete it. Instead of putting off a release any longer, I decided to add this update with a few fixes!

Features

• Added MIDI support to activate notes! 
  • Plug in a MIDI keyboard and it'll probably work, just make sure you adjust the octave in Synulator!
• Added a big hole to the main menu, because a new menu item is supposed to be there but I didn't finish it

Fixes

• Fixed an issue with Sine wave generation; now a more-perfect Sine is calculated
• Turned on incremental garbage collection, to reduce lag spikes
• Fixed some problems with values jumping, for temp changes like pitch bends
• Reduced the frequency of file read/write; values aren't saved as often, but requires less disk work

As a reward for checking out this post, I'll leave a sneak preview of the indefinitely-delayed mode, the Addillator! This harnesses the power of Synulator to create an additive synthesizer, with some cute on-screen keys for playing notes. It could eventually have many sliders to adjust inputs and post-processing effects, if I ever find the time...