v2.5

use LaTeX's hook mechanism

v2.4

protect utf8 octets

v2.3

• remove redefinitions of \MakeUppercase and \MakeLowercase, being not needed with LaTeX kernel 2022/06
• use keyval-based option processing of LaTeX kernel 2022/06

v2.2

partially support josa selection after biblatex's \cite command

v2.1

• support automatic Josa selection after hangul syllables (U+AC00 .. U+D7A3)

v2.0

• allow non-ascii characters in LaTeX labels
• redefine \MakeUppercase and \MakeLowercase for Latin-1 supplement block
• care about fancyvrb's VerbatimOut environment
• load konames-utf.sty immediately
• use LaTeX's cmd hooks

v1.9

• use latex's font family hooks
• do not load glyphtounicode.tex when fmtversion >= 2021/05/01
• add \pdfnobuiltintounicode\font@name to the end of \CJK@addcmap

v1.8

• new package option truetype
• pass unknown options to CJKutf8.sty
• ignore variation selectors for Korean hanja

v1.7

• use uhc font when nanumtype1 does not exist.
• minor fixes

v1.6

• kotex.sty: [euc] option triggers relevant luatexko commands
• cjkutf8-ko.sty: make utf-8 characters robust.