mixin bubble(time, user)
    -
        let classes = {
            'o-bubble': true,
            't-raised':         true
        }
        if (attributes.class) {
            classes[attributes.class] = true
        }

    article(class=classes)
        if user
            header.o-bubble__user
                strong= user
        span.s-colored-links
            block
        small.o-bubble__time
            = time
            if attributes.scope
                = ' '
                +icon(attributes.scope)