todos

[thipages]

in the way ...

• when level-up attribute is used, allow attribute transfer from the parent to the first (BUT unique) child for getting a reference for CSS
  • What about when the parent has more than one child?
• add registerLoad(callback, remove = false) so that event cleaning can be done at the disconnect level at latest
• add in options noLevelUp (default false)
• remove isAsyncFunction mechanism and replace with await Promise.resolve(init());