CTAN update: l3kernel

[CTAN Announcements]

The LaTeX Project Team submitted an update to the

                      l3kernel

bundle.

Version:  2023-02-07
License:  lppl1.3c

Summary description:  LaTeX3 programming conventions

Announcement text:
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 ### Changed
 - Swap meaning of `el` and `el-x-iota` when case changing
   Greek: match traditional LaTeX approach

 ### Deprecated
 - `\l_text_accents_tl` and `\l_text_letterlike_tl`

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The package’s Catalogue entry can be viewed at
   https://ctan.org/pkg/l3kernel

The package’s files themselves can be inspected at
   https://mirrors.ctan.org/macros/latex/contrib/l3kernel/

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   Thanks for the upload.

     For the CTAN Team
    Petra Rübe-Pugliese

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