Version 0.3.0

Changes:

• Binary size is much ~20% smaller (because I eliminated launcher.exe).
• Updating is now handled by Task Scheduler.
• Setup no longer controls the registry to redirect the protocol, the installer does that.
• Updating is now completely silent. It also doesn't have version folders anymore.
• Abstracted much of the functionality into separate functions, they aren't intertwined, so I can remove one module and the rest will still work.
• Cleaned up the code. A lot.
• New build script just for me.
• Versions before 0.2.0 will no longer update and will probably error, because I'm not including a zip file this time.
• Engine templates list (engines.txt) is not moved to libs/engines.txt.

Note: All of this is in preparation for publishing on the Microsoft Store. These installer builds will be available for the foreseeable future for free, but I'm broke, and if you would like to support me, you should buy it ($1.99) on the Microsoft Store once I publish it.