CTAN update: l3backend-dev

The LaTeX Project Team submitted an update to the

                l3backend-dev

package.

Version number: 2025-03-10
License type: lppl1.3c

Summary description: LaTeX3 backend drivers (dev)

Announcement text:
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## [2025-03-10]

### Added
- Support for canvas shifts

### Changed
- Move PDF annotation functions to `pdfannot` module


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This package is located at
   https://mirrors.ctan.org/macros/latex-dev/required/l3backend

More information is at
   https://www.ctan.org/pkg/l3backend-dev

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   Thanks for the upload.

     For the CTAN Team
    Erik Braun

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