Just like there is an ability to set nav-class on a b-tab could we not also have active-class with similar options.

e.g. at the moment I can use by default

<b-tabs :nav-class="customvariant">
    <b-tab title="tab">Tab Content</b-tab>
</b-tabs>

Does it not make sense to also have something like:

<b-tabs :nav-class="customvariant" :active-class="customactive">
    <b-tab title="tab">Tab Content</b-tab>
</b-tabs>

Hope this makes sense?