Animations that use only one child-div will hide any extra child-divs.

[okonomiyaki3000]

So what's the point of this? Load Awesome's animations are very simple to use except for one point, different animations require different HTML (anywhere from 1-9 child divs). So, if you want to write a single block of html and simply switch the class to use a different animation, there could be a problem. For the most part, there is no problem as long as you have enough divs. The unused ones simply don't get styled and don't cause a problem. This is not true in cases where a single child div is expected. In those cases, any additional children are also styled. This PR ensures that only the first of those is displayed at all.

So, the purpose of this is to allow any animation to work with an html structure like:

<div class="la-anything">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
</div>