Neat 0.2.4: This is a placeholder.

This release mostly exists to get the void delegate!() syntax in so I can use it in the compiler during bootstrapping.

I'll explain what that does once it actually does something. :)

Changes

• Switch to LLVM 15 with opaque pointers.
• Implement polysemous array literal conversion.
• Implement nested function mutual recursion.
• Add new syntax: void delegate!(). This is a placeholder.
• Small parser speedups.