Multiline values

[luisdavim]

Fixes #13 and #10

I've done some refactoring that should help improve performance a little bit, reviewing each commit individually might be easier.

[subosito]

Thanks, @luisdavim, this is huge! Could you please resolve the conflicts? So we can move forward.

[luisdavim]

Done, I've rebased my branch, thanks for looking into this so quickly 👍

[subosito]

Awesome!, thanks, @luisdavim 🎉

[luisdavim]

Thanks for merging this, would you mind creating a new tag?
You can also close #10 this inclues a new test confirming it's resolved.

[subosito]

Sure, @luisdavim, I have just released v1.3.0 tag.