Test SVG update element with tag change
Test SVG update element with tag change

Currently failing. Updating an SVG element which tag changes
actually results in an unknown HTML element.

tivac/mithril.js,tivac/mithril.js,barneycarroll/mithril.js,impinball/mithril.js,barneycarroll/mithril.js,pygy/mithril.js,pygy/mithril.js,impinball/mithril.js,MithrilJS/mithril.js,lhorie/mithril.js,lhorie/mithril.js,MithrilJS/mithril.js