Namespaced attributes aren't updated incrementally

[AndyOGo]

Are you reporting a bug or a feature?

• Bug
• Feature

Expected Behavior

All attributes including namespaced attributes should update on incremental rendering.

Actual Behavior

Steps to Reproduce the Problem

Namespaced attributes do not update.

1. Open Firefox
2. Go to https://axa-ch.github.io/patterns-library/atoms.html#a-icon

Chrome (Using new SVG <use href/>)

Firefox (Using old SVG <use xlink:href/>)

Specifications

• Browser: Firefox
• Browser Version: Latest
• Nanomorph: SVG use does not repaint in firefox upon second update choojs/nanomorph#101
• Morphdom: Namespaced attributes do not update patrick-steele-idem/morphdom#124

[AndyOGo]

I implemented our own DOM morphing function.
So this is obsolete, though we could consider to publish it as it's own module...