Optional syntax for implements and extends

[Jeyvison Nascimento]

Even though it's not a downright bad idea, it's not great either. That's
> because _reading code is more important than writing code_, and this
> idea is purely about saving a few keystrokes when writing code.  And it
> doesn't offer the ability to do anything new; it's merely a syntactic
> shortcut. Wrong end of the lever.
>
>
Totally agree with this.

-- 
Jeyvison Nascimento