(U-000233D4): Add `sound@ja/on'; use `->subsumptive'; integrate

(U-000233D4): Add `sound@ja/on'; use `->subsumptive'; integrate
GT-18463.
(U-00023455): New character.
(U+693D): Use `->subsumptive'.
(U+693E): Use `->denotational' and `->subsumptive'.
(U+693F): Use `->subsumptive'.
(U+6941): Use `->subsumptive'.
(U+3B8E): Use `->subsumptive'.
(U+3B96): Unify M-15129; add `sound@ja/on/{go|kan}'.
(U+3B97): Use `->subsumptive'; integrate M-15130.
(U-00023548): Unify M-15161 and H4-A7F9.
(U+3B9A): Use `->subsumptive'; integrate M-15166.
(U+3B9C): Use `->subsumptive'; integrate M-15180.
(U+6975): Use `->denotational' and `->subsumptive'.
(U+3B9E): Use `->denotational' and `->subsumptive'; integrate M-15183
H4-AA6A.
(U-00023552): Unify M-15197; add `<-ancient' for U+6A39.
(U-00023553): Use `->subsumptive'; integrate M-15198.
(U+3B9F): Unify M-15199; add `sound@ja/on/{go|kan}'.
(U-000235A4): Unify M-15200 and H1-F5F3.
(U+3BA3): Use `->subsumptive'.
(U+6983): Add `ideographic-{radical|strokes}@{ucs|cns}'; move B-DEC6
to U+6983.
(U+6986): Use `->subsumptive'.
(J90-432E): Unify JC3-70C3.