MPL compiler version 210214

This update changes the move semantics of the language. The built-ins that controlled the moved flag have been removed. Built-in copy renamed to new. Built-ins new and set now move objects with the writable flag.

• Added new built-in
• Removed copy, isMoved, move, and moveIf built-ins
• set built-in now moves writable objects

Attached files:

• mplc.ll - precompiled MPL Compiler (LLVM IR)
• mplc.exe - Windows binary