(A-cgnU+20203): New abstract node.

(A-cgnU+20203): New abstract node.
(U-00020203): Add `<-denotational' for A-cgnU+20203; add
`ideographic-structure'; add some relations for other characters.
(U+20203-itaiji-001): New character; use `<-denotational' for
A-cgnU+20203.
(U+4FDD): Add `<-denotational@usage' for BUCS+4FDD; add
`sound@ja/on/{kan|go}' and `sound@ja/on/conventional'; add some
relations for other characters.
(M-00905): Unify MJ030683 and KOSEKI-010500.
(U-000202FE): Add `ideographic-structure'; add `sound@ja/on'.
(IU+202FE): Add `ideographic-structure'; add `<-ancient' for UU+5BF6.
(U-00020300): Apply new conventions for glyph granularity.
(A-IWDSU+348C): Add `ideographic-structure'.
(U+348C): Apply new conventions for glyph granularity.
(o-IU+203BD): Likewise.
(BUCS+4FDD): New abstract node; unify A2-DJT-00342.