Mostly just cleanup and renaming of certain stuff (mostly in dependencies).
* Changed uw and sw to usize and ssize.
* Removed zpl_cast usage throughout dependencies
* No longer using GEN_DEF_INLINE & GEN_IMPL_INLINE
* header_start.hpp renamed to platform.hpp for depdendencies header.
* Number literals weren't getting properly lexed
* Fixes for compiler errors with Unreal Engine configuration.
* Support for "post-name" macros in parameters
* Support for variables initializing directly using constructor syntax.
* Explicitly added inline keyword to header inlines for compiling compile library in multiple translation units.
parse_static_assert now properly adds new-line to end of statement.
I'm going to end up making a static_assert ast... that or when the statement ast is made it will handle adding that newline.
