CTAN update: l3kernel

[CTAN Announcements]

The LaTeX Project Team  submitted an update to the

                l3kernel

package.

Version number: 2023-06-05
License type: lppl1.3c

Summary description: LaTeX3 programming conventions

Announcement text:
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## [2023-06-05]

### Added
- `\cctab_gsave_current:N`, `\g_tmpa_cctab` and `\g_tmpb_cctab` (issue \#1089)
- `\prg_gset_eq_conditional:NNn` (issue \#1212)
- `\iow_shell_open:Nn` (issue \#1122)

## Deprecated
- `\tl_case:Nn(TF)`
- `expl3` package option `enable-debug` (no longer required)

### Fixed
- Set `\l_keys_value_tl` in `.initial:n` (issue \#1013)
- Support for boolean values in `expl3` package options
  `check-declarations` and `log-functions` (issue \#978)
- Allow for optional `/` at end of `\input at path` entries
  (see latex3/latex2e\#1076)
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This package is located at 
   https://mirrors.ctan.org/macros/latex/contrib/l3kernel

More information is at
   https://www.ctan.org/pkg/l3kernel

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   Thanks for the upload.

     For the CTAN Team
    Ina Dau

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