v2.37.0

• introduce a new operator mpliblength <string>, a unicode-aware version of the length primitive
• introduce a new operator mplibsubstring <pair> of <string>, a unicode-aware version of the substring ... of ... primitive

v2.36.3

• change // to math.floor for compatibility with luajittex (#158)
• fix documentation on mplibgraphictext considering the introduction of withshadingmethod

v2.36.2

fix a bug regarding expansion of options

v2.36.1

fix a bug of previous release: missing local in front of os

v2.36.0

• <path>|<textual picture> withshadingmethod <string>, where <string> shall be "linear" or "circular", gives shading effect to the <path> or <textual picture> with plain format as well as metafun. See the documentation.

• withtransparency (<number>|<string>, <number>) gives transparency effect with plain format as well. See the documentation.

• added dir TLT to usemplibgroup boxes

• removed tag=artifact option. Use artifact instead.

v2.35.2

• fix height/depth of boxes made by \mplibgroup command
• enhanced tagging of \usemplibgroup

v2.35.1

• cope with TEX(char13): remove everything from char13 to the end of input string
  (https://tug.org/pipermail/metapost/2024-November/003572.html)

• (WIP) avoid internal command names of tagpdf/kernel code (#151)

v2.35.0

• even under \mplibtextextlabel{true}, the original infont operator will
  be used when the character slot of the text argument is less than 32, or is
  equal to 35, 36, 37, 38, 92, 94, 95, 123, 125, 126 or 127.

• \mplibforcehmode will have effects on \usemplibgroup as well as ordinary
  metapost figures.

• support tagged PDF when tagpdf package is activated. The related code is
  currently in experimental stage. See the documentation for details.

v2.34.5

• provide withgroupbbox macro for transparency group to enable users to control the bounding box

• write down the width/height/depth values of mplibgroup to the log file

v2.34.4

• withpattern operator accepts a textual picture as well as a path for its operand. Thus users can give pattern effect to the result of btex command or infont operator.

• fix regarding line width in mplibgraphictext