Handy helpers for controlling visibility of elements until Vue has compiled.

Use like:

```html
<div v-cloak>
  <h1>
    <span class="v-cloak--inline">Loading...</span> <!-- Only displayed before compiling -->
    <span class="v-cloak--hidden">{{ post.title }}</span> <!-- Hidden until compiling is finished -->
  </h1>
</div>
```

Includes variations for `block`, `inline`, and `inline-block` display attributes.

```css
[v-cloak] .v-cloak--block {
  display: block;
}
[v-cloak] .v-cloak--inline {
  display: inline;
}
[v-cloak] .v-cloak--inlineBlock {
  display: inline-block;
}
[v-cloak] .v-cloak--hidden {
  display: none;
}
[v-cloak] .v-cloak--invisible {
  visibility: hidden;
}
.v-cloak--block,
.v-cloak--inline,
.v-cloak--inlineBlock {
  display: none;
}
```