(U+56F0): Add `<-denotational@usage' for BUCS+56F0 and BUCS+774F;

(U+56F0): Add `<-denotational@usage' for BUCS+56F0 and BUCS+774F;
apply new conventions for glyph granularity.
(U-000211C9): Apply new conventions for glyph granularity.
(A-cgnU+2D35E): New abstract node.
(U-0002D35E): Add `<-denotational' for A-cgnU+2D35E; apply new
conventions for glyph granularity.
(A-U+2D35E-itaiji-001): New abstract node; use `<-denotational' for
A-cgnU+2D35E.
(U+2D35E-itaiji-001): New character; use `<-denotational' for
A-U+2D35E-itaiji-001.
(A-U+268FB-itaiji-003): New abstract node.
(U+268FB-itaiji-003): New character; use `<-denotational' for
A-U+268FB-itaiji-003.
(BUCS+56F0): New abstract node; unify A2-DJT-01623.