Fixed classnames not allowing / and :

[petter]

Ran into some issues where emmet wouldn't correctly expand abbreviations containing class names with a / or a :. These characters are quite commonly used in some css frameworks like TailwindCSS.

Examples:

.w-1/2

Before fix:

<div class="w-1"></div>

After fix:

<div class="w-1/2"></div>

a.hover:text-orange-300>lorem1

Before fix:

<a class="hover" href=""></a>
<text-orange-300>
    <span>Lorem</span>
</text-orange-300>

After fix:

<a class="hover:text-orange-300" href=""><span>Lorem</span></a>

[joswr1ght]

Thanks for this @petter!