- Update / fix copyright notices.
- Add a few notes.
Allow absolutizeSelector to handle `:not(ol,ul)`, `:matches(ol,ul)`, etc.
.split() .join() can be done with .replace(). Probably marginally quicker
Allow for Bindings to be attached to elements before they enter the document.
The `attached` callback will be called, but not the `enteredDocument` callback.
When applying binding rules to a tree that has entered the document,
elements are checked for bindings that have been pre-attached -
the pre-attached bindings only have their `enteredDocument` callback called.