Roles of notes: coherence, and completion

[LaZay]

PRINT LIKE NOTE DISPLAY
Role=doc-endnote (singular) has been deprecated in DPUB-ARIA 1.1, which makes sense, as every single note placed under an element with role=doc-endnotes (plural) will necessarly be a doc-endnote (singular). It is useless to specify it.

On the contrary, individual footnotes still have a role=doc-footnote (singular) value, though there can be several individual footnotes in the bottom of a page (footer => footnote). We are still missing a role=doc-footnotes (plural) value. Furthermore, it makes things inconsistent with end notes modeling, though the two usecases are very similar, as print publications group the notes' content in specific paper zones.

We are still missing tables' notes too (role=doc-tablenote and/or role=doc-tablenotes) by the way.

DIGITAL SPECIFIC NOTE DISPLAY
Finally, we are missing a role for cleaver digital publications, that don't want to display notes' content away from their notes' references (as print publications do, for medium reasons). These digital publications prefer to display notes' content right over the notes' reference (as a pop-up/hover text). No DPUB ARIA role matches this usecase presently (doc-footnote is a misinterpretation). We would need a doc-notecontent (or doc-notebody) value for this.