Grammar highlighting and auto indent

[wuqs-net]

• When there is a loop inside a loop, grammar highlighting for loop does not work properly.
• When there is more than one end loop, the auto indent also goes wrong.

Reproduce:
Copy code below into Atom and then auto-indent them.

loop
    put "hello"
    var i : int := 0
    loop
        put "world"
        i += 1
    end loop
end loop

[Alhadis]

@trifirew I'm very busy at the moment. A pull request is welcome, if you want to fix this yourself.

[wuqs-net]

@Alhadis I would like to. But I didn't find out where the problem is and how to fix it.