Alternative syntax for "install" command?

Hyperscript's behaviors are a wonderful thing, but instantiating them on an element always reads a little funny. @dz4k has promoted `I am` as an alias for the `install` command, as in ``. While this reads wonderfully, it could certainly be trouble for the parser. Here are two alternatives to consider:

## "Use"
We're not currently using the keyword `use`, and it seems to fit semantically, as in:

```

```

## Distinct Attribute
Since this is such a DOM-speciic feature, it might work well to separate it into its own attribute -- something like:
```

```
or even
```

```

Thoughts?

L’issue ne mentionne aucun fichier d’implémentation ni aucun test. Commencez par localiser le point d’entrée du parser et la gestion du comportement du DOM, puis comparez la syntaxe `use` proposée aux alternatives utilisant des attributs distincts. La tâche est terminée lorsqu’une syntaxe approuvée ainsi que la couverture correspondante du parser et du comportement sont disponibles.

Rédigé par le modèle d'indexation à partir du texte de l'issue.