Add the possibility to use media function for height based media query

[lusimeon]

Proposal for #4.

[perruche]

👍

[titouanmathis]

Nice!
Maybe it would be simpler to keep the width and height definitions in one map ?

$breakpoints: (
  height: (
    xxs: 0,
    //...
  ),
  width: (
    xxs: 0,
    xs: 480,
    // ...
  ),
);

[titouanmathis]

Will close #4 on merge 👍

[perruche]

I'am not sure it's a good idea to use the same map for height and width:

• we will have to rewrite all the breakpoints based utility classes.
• We can't use the same keys as in your example .type-center--s would be a height or width based class ?
• I don't think height based utility classes are really useful.

What do you think ?

[titouanmathis]

It all makes sense, all good for me! 👍

[titouanmathis]

@lusimeon you should update the documentation in the readme too

[titouanmathis]

@lusimeon you can merge your feature 😉

Note: maybe you should do it directly on Github with the big green button, it seems like closing a feature with Git Flow marks the PR as closed and not merged :/