When morphing <template> elements, treat the DocumentFragment
instances returned from the HTMLTemplateElement.content properties
as morphChildren methods' newParent and oldParent variables.
That way, descendant nodes can be iterated across the
connected-disconnected boundary.
Closes #15
When morphing
<template>elements, treat the DocumentFragment instances returned from the HTMLTemplateElement.content properties asmorphChildrenmethods'newParentandoldParentvariables.That way, descendant nodes can be iterated across the connected-disconnected boundary.