- Some opcodes have the incorrect value set in std.
- Some opcodes were missing and have now been added to std.
- Adding wrapping operands for add,sub and mul.
- Implement intCast which either extends or shortens the type.
This refactor inserts an offset table into wasm's data section
where each offset points to the actual data region.
This means we can keep offset indexes consistant and do not
have to perform any computer to determine where in the data section
something like a static string exists. Instead during runtime
it will load the data offset onto the stack.
