CTAN update: l3kernel

[CTAN Announcements]

The LaTeX Team submitted an update to the

                l3kernel

package.

Version number: 2020-03-03
License type: lppl1.3c

Summary description: LaTeX3 programming conventions

Announcement text:
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## [2020-03-03]

### Added
- `\tex...:D` coverage for TeX Live 2020 engine changes

### Changed
- New implementation for `\keyval_parse:NNn` - around 40% speed improvement,
  also *expandable*

### Fixed
- Make `expl3` reload-safe for `latexrelease` (see latex3/latex2e#295)
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This package is located at 
   http://mirror.ctan.org/macros/latex/contrib/l3kernel

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

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   Thanks for the upload.

     For the CTAN Team
    Ina Dau

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