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.