[css-text-3] correct implementation of full-size-kana #3209
Description
I recently attempted to implement full-size-kana in Firefox (https://bugzilla.mozilla.org/show_bug.cgi?id=1498148).
I have some doubts regarding which kana characters should be transformed from small to normal size. Appendix G (Small Kana Mappings) (https://drafts.csswg.org/css-text-3/#small-kana) of "CSS Text Module Level 3", provides a set of small kana and their mappings to normal size kana.
However, Florian’s spec of full-size-kana (https://specs.rivoal.net/css-custom-tt/#full-size-kana) provides a much larger mapping of kanas. This is interesting as the example of transformation provided at #3143: しゃ into しや is covered by Florian's specification of full-size-kana but not by the Appendix G of the draft. Is it likely the list of mappings provided in Florian's spec will be finally merged in the draft?
On the other hand, the list of kanas listed in https://specs.rivoal.net/css-custom-tt/#full-size-kana is missing 2 mappings:
'ㇺ' => 'ム' (Katakana Small Mu => Katakana Mu)
'ｯ' => 'ﾂ' (Half-width Katakana Small Tu => Half-width Katakana Tu)