Known issue(Vue HTML): HTML intention will change, empty nodes, empty attributes

replacing HTML is tricky, We are using Nokogiri, but that will modify the DOM layout sometimes:

- indention is changed
- Empty nodes that are nonstandard ``<MyComponent/>`` might be expanded
- Empty attributes such as ``v-b-tooltip>`` might be expanded to ``v-b-tooltip=""`

There are already a couple of workarounds in place work around those issues, but might need more.