Now we can type only [normal](https://www.w3.org/TR/2014/REC-html5-20141028/syntax.html#normal-elements) tags of components like that: `<cat-foo>Some Content</cat-foo>` I propose to let [void](https://www.w3.org/TR/2014/REC-html5-20141028/syntax.html#void-elements) tags for components without slots like that: `<cat-bar />`