Remove itemprop=keywords from <nav> and move tag search outside.
Element.after, before, prepend, and append can now work multiple args.

Loop through the function arguments, allowing multiple things to be added
at once instead of one-at-a-time. Now use el.append(first, second, third)
instead of needing to do el.append(first).append(second).append(third).
Make post editing code less verbose.

Declare several vars at once instead of var..., var...

Use fieldset.append({everything}) instead of fieldset.appendChild() and
adding each individually.
Re-add cusor animation.
Align icon/labels with content using font-size + vertical-align.