src/dropdown/template.html
<div :is="isLi?'li':'div'"
:class="[{open:show,disabled:disabled,dropdown:isLi,'input-group-btn':inInput,'btn-group':!isLi&&!inInput}]"
>
<slot name="before"></slot>
<a v-if="isLi?'a':'button'" role="button" :class="makeClasses"
@keyup.esc="hiddeMe"
@click.prevent="toggle"
>
<slot name="button">{{ text }}</slot>
<span class="caret"></span>
</a>
<slot name="dropdown-menu">
<ul class="dropdown-menu"><slot></slot></ul>
</slot>
</div>