CTAN update: tcolorbox

[CTAN Announcements]

Thomas F. Sturm submitted an update to the

                tcolorbox

package.

Version number: 6.2.0 2024-01-10
License type: lppl1.3

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

Announcement text:
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### Added
- New convenience options for box content additions (issue #250)
    - Option `environment upper`
    - Option `environment upper args`
    - Option `environment lower`
    - Option `environment lower args`
    - Option `environment title`
    - Option `environment title args`
- Library `hooks`:
    - Option `environment upper app`
    - Option `environment upper args app`
    - Option `environment lower app`
    - Option `environment lower args app`
    - Option `environment title app`
    - Option `environment title args app`
    - Option `environment upper pre`
    - Option `environment upper args pre`
    - Option `environment lower pre`
    - Option `environment lower args pre`
    - Option `environment title pre`
    - Option `environment title args pre`
- Library `documentation`:
    - Option `index key formatter`
    - Option `index keys formatter`
    - Root (`/`) of a documented key made configurable (issue #259):
        - Option `doc key prefix`

### Changed
- Minor implementation change to `redirectlowerto` (issue #240)
- `pgfkeys` mentioned in the documentation (issue #241)
- Distinct `savelowerto`/`redirectlowerto` file names inside the documentation (issue #248)
- Updated documentation and warnings for the interaction between `saveto`
    and `savelowerto` (issue #249)
- Improved some `\sarg` examples in the documentation (issue #256)
- Small typos in the documentation (issue #261)
- Recording macros rewritten in expl3 code (part of issue #255)    
- Usage of expl3 scratch variables like `\l_tmpa_tl` replaced by package variables like `\l__tcobox_tmpa_tl`
- Library `documentation`:
    - Expl3 arg-spec of internal macro corrected (issue #257)
    - `\tcbmakedocSubKey` and `\tcbmakedocSubKeys` take options now (issue #259)
- Library `external`: package loading of `pdftexcmds` and `shellesc` removed.
    Expl3 functions are used as drop-in replacements (part of issue #255)
- Libraries `listings`, `listingsutf8`, and `minted`: 
    package loading of `pdftexcmds` and `shellesc` removed (part of issue #255)
- Needed LaTeX version updated to 2021-11-15    

### Removed
- Loading of the `xparse` library dropped inside the `documentation` library since all
    needed features are part of the LaTeX format now (issue #254)

### Fixed
- Several documentation typos and minor improvements (PR/issue #251 and PR/issue #252)
- Extra top space if `parbox=false` and tcolorbox starts with a list (issue #262)


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This package is located at 
   https://mirrors.ctan.org/macros/latex/contrib/tcolorbox

More information is at
   https://www.ctan.org/pkg/tcolorbox

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   Thanks for the upload.

     For the CTAN Team
    Erik Braun

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