v3.8

• fix an age-old bug regarding protrusion of harfbuzz font
• add 0xFF0C and 0xFF0E to fonts.protrusions.setups.default

v3.7

• prevent garbages in dvi mode
• change char class of some chinese chars
• use LaTeX's build/page/before hook if available

v3.6

• prevent possible error in vertical writing mode
• more precise space_skip after hangul characters

v3.5

use kernel's selectfont

v3.4

• do not delay loading of konames-utf.sty

v3.3

• respect para/end hook
• allow linebreak before CJK Unified Ideographs Extension G
• normalize node sequence LV, T
• fix a bug wrt detection of HB fonts

v3.2

• luatexko.lua
  • support automatic josa selection after hanja characters
  • dotemph/uline/ruby routines are now called from hpack_filter, pre_linebreak_filter, and post_linebreak_filter callbacks.
• luatexko.sty
  • use LaTeX's selectfont hook which require LaTeX 2021/06/01 or later
  • a new LaTeX environment: verticaltypesetting
  • new plain TeX commands: \sethangulfont \sethanjafont \setfallbackfont \beginverticaltypesetting \endverticaltypesetting
  • vertical/horizontal environments now honor empty argument, which means natural width.

v3.1

• insert 1/4 quad after vertical colons
• cleverer behavior when protrusion option is given
• process_fonts() is now called by hyphenate callback

v3.0

• do not adjust interword glue after CJK characters when current font is a monospaced font
• horizontal metrics of default Hangul monospaced font are matched with those of Latin Modern Mono
• fix a bug wrt dotemph/ruby/sout position in vertical writing
• deprecated command \actualtext is now removed

v2.9

• adapt to latex-base-dev's new shipout hooks
• adapt to luaotfload's (not yet released) new expansion feature
• center-align horizontal writing box inside vertical writing
• luatexko-normalize: use lua-uni-algos package, which means that normalization will not be confined to Hangul characters but applied to all the Unicode ranges.