Fix #189: Add Tagged

[martijnengler]

This PR fixes #189

Requires decodelabs/tagged and uses it instead of hardcoded HTML.

Last commit in this PR fixes what I assume is a small issue with the output. Old output was:

 <span class="foo">foo = test</span><span class="bar">foo = lol</span>

New output is:

 <span class="foo">foo = test</span><span class="bar">bar = lol</span>

(Note the bar = lol vs. foo = lol)

Didn't feel like this needed a separate PR, but happy to drop the commit or split it.

[Mte90]

Thanks!