Vale v0.2.0 Release

New features:

• Can now break from inside a loop!
• Adds const generics.
• Adds concept functions.

Simplified syntax:

• Removed function signatures' impl MyInterface, no longer needed.
• Removed permissions and pointers
• Improved ownership rules, method calling on a returned value now sends own, really good for builders
• Added postfix borrow
• ret is now return
• Weak references are now &&

stdlib changes:

• Added stdlib back into main Vale repo
• Added hash set diff iter, moved collections to their own dirs
• Changed has() to Contains() and ContainsKey()
• Made remove() return the old value
• Added HashSet.GetRandomElement, List.Reverse, fsqrt, lshift, rshift, xor, i64(i32), mod(i64, i64), Opt.==, Opt.clone, Opt.or, str.charAt
• Added Higher RAII for HashMap and Opt

Under the hood:

• Bumped to LLVM 13
• Added a new parser that doesn't use combinators
• Added interning to compiler