(U-000216AF): Add `sound@ja/on'.

(U-000216AF): Add `sound@ja/on'.
(CU+216AF): Add `<-formed' and `<-same' for UU+5AED.
(U+59F1): Add `<-denotational@usage' for A2-DJT-02096; add
`sound@ja/on/{kan|go}'.
(UU+59F1): Unify DJT-02096; add `<-formed' for UU+5938; add
`<-interchangeable' for UU+5AEE.
(U+5A8C): Add `<-denotational@usage' for A2-DJT-02173.
(UU+5A8C): Unify DJT-02173.
(U+5AED): Add `<-denotational@usage' for A2-DJT-02218; apply new
conventions for glyph granularity.
(U+5AEE): Add `<-denotational@usage' for A2-DJT-02219; apply new
conventions for glyph granularity.
(U-00021898): Add `<-denotational@usage' for A2-DJT-02241; apply new
conventions for glyph granularity.
(U+3733): Apply new conventions for glyph granularity.
(A2-DJT-02096): New abstract node.
(A2-DJT-02173): New abstract node.
(A2-DJT-02218): New abstract node.
(A2-DJT-02219): New abstract node.
(A2-DJT-02241): New abstract node.