[nem-en] IntelliSense support of macro

[vc]

> BTW. Vlad, do you need Typer2 to be run for any purpose in completion
> mode? Because I think it would be a good idea to also provide subtype
> of Typer, which could just skip any typing stage after 1.

I think about this some time. I try this now and such as it's work.

> Also, Michal suggested some time ago, that Typer in completion mode
> could start from "error mode" (normal/error mode is a heuristic to
> make compilation of valid programs faster),  since in completion mode
> you process only single function, which is going to have errors in
> most cases. For details we need some Michal's insight though.

+1