No quotable upstream change summary about unicode emoji, but
updated for Unicode 11.0:
http://www.unicode.org/reports/tr51/index.html
"Starting with Version 11.0 of this specification, the repertoire of
emoji characters is synchronized with the Unicode Standard, and has
the same version numbering system."
Unicode Emoji Data Files are the machine-readable emoji data files
associated with UTS #51.
http://www.unicode.org/reports/tr51/index.html
These files are required by recent ibus Emoji dictionary support.
PR pkg/52692