Preserve indentation when rendering partials

[yotammadem]

A fix for: #562

[yotammadem]

not all spec tests are passing, closing...

[yotammadem]

I've added all the tests described in this spec: https://github.com/mustache/spec/blob/master/specs/partials.yml
And they are passing now
@janl, @mjackson @dasilvacontin - If one of you (or anyone else from the team) can review and merge/reject it would be great

[yotammadem]

I decided to follow the original solution of @kevindew (PR: #613) as it looks more elegant
I had to change some minor things to make it work according the the spec tests

[phillipj]

This looks really promising! Adding the tests from the mustache spec project was a great addition 👍

I really feel @kevindew should get more credit for his contributions, as he wrote the first draft in #613 as you mention. At the moment, none of the commits has his name on it, which isn't quite fair in my eyes. Wondering if we should use his changes as the first commit, then add your commits as tweaks on top. That way you both get credit for your contributions, well deserved 😄

[yotammadem]

@phillipj
Sorry,
I didn't think about the commits/credit aspect, I just wanted the thing to work.
I will re-arrange the PR such that it will include Kevin's commits

[phillipj]

Fully understandable!

Cool 👍

[yotammadem]

@phillipj
Done - please look at
#705