CTAN update: tcolorbox

[CTAN Announcements]

Thomas F. Sturm submitted an update to the

                  tcolorbox

package.

Version:  6.0.3 2023-03-17
License:  lppl1.3

Summary description:  Coloured boxes, for LaTeX examples and theorems, etc

Announcement text:
----------------------------------------------------------------------
 
 ### Added
 - Usage of `\tcblower` where not applicable gives a more helpful error message (issue #215)
 - Usage of `capture=fitbox` for `\tcbox` gives an error message (issue #217)
 - Library documentation:
     - Macro `\sarg` (issue #193)

 ### Changed
 - Documentation:
     - List of initialization option macros enlarged (issue #213)
     - Removed `xparse` references (issue #214)
     - Typo correction (issue #216, issue #219)
 - Library `skins`:
     - `\tcbhypernode` made compatible for xelatex (issue #221)

 ### Fixed
 - `parbox=false` accumulated negative `\parskip` values, if called several times
     or used with `attach title to upper` (issue #222)
 - Library `breakable`:
     - Reverting to `\color{.}` hack to avoid color bleeding after the box
     - `Discard zero height first box part` problem hopefully solved (issue #218)

----------------------------------------------------------------------

The package’s Catalogue entry can be viewed at
   https://ctan.org/pkg/tcolorbox

The package’s files themselves can be inspected at
   https://mirrors.ctan.org/macros/latex/contrib/tcolorbox/

------------------------------------------------------------------------

   Thanks for the upload.

     For the CTAN Team
    Petra Rübe-Pugliese

------------------------------------------------------------------------

CTAN is run entirely by volunteers and supported by TeX user groups.
Please join a user group or donate to one, see https://ctan.org/lugs