(A-compU+758B): New abstract node.

(A-compU+758B): New abstract node.
(U+758B): Add `<-denotational@component' for A-compU+758B; add
representative nodes.
(U-00024D13): Add `<-denotational@component' for A-compU+758B.
(U+758B-itaiji-001): New character.
(U-00024D15): Apply new conventions for glyph granularity.
(M-21996): Add `<-denotational' for U-00024D15; add
`ideographic-structure'; unify MJ041507 and KOSEKI-246820.
(UU+758C): Add some relations for other characters.
(U-00024D18): Use `->denotational' and `->subsumptive'.
(U-00024D17): Apply new conventions for glyph granularity.
(U-00024D1E): Add `ideographic-structure'; add `sound@ja/on'; add
`<-ancient' for CU+590F.
(A-cgnU+24D21): New abstract node.
(U-00024D21): Add `<-denotational' for A-cgnU+24D21; add
`ideographic-structure'; add `<-original' for U+7590.
(U+24D21-var-001): New character; use `<-denotational' for
A-cgnU+24D21.