CTAN update: l3experimental

[CTAN Announcements]

The LaTeX Team submitted an update to the

                l3experimental

package.

Version number: 2019-05-28
License type: lppl1.3c

Summary description: Experimental LaTeX3 concepts

Announcement text:
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## [2019-05-28]

### Added

- New `l3graphics` module

### Fixed

- Missing `\scan_stop:` in benchmark code (fixes #577)


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This package is located at 
   http://mirror.ctan.org/macros/latex/contrib/l3experimental

More information is at
   https://www.ctan.org/pkg/l3experimental

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   Thanks for the upload.

     For the CTAN Team
    Erik Braun

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