CTAN update: gregoriotex

Br. Samuel Springuel submitted an update to the gregoriotex package. Version number: 4.1.5 License type: gpl3 Summary description: engraving Gregorian Chant scores Announcement text:

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- Use node.travese_id() to find our desired nodes when doing translation centering across syllables, thereby preventing a conflict with other packages which insert nodes (such as luatex-ja). See [#1180](https://github.com/gregorio-project/gregorio/issues/1180). - Explicitly communicate the rescaling of `\gre at skip@temp at four` back to TeX, thereby fixing the problem with custom spacings. See [#1199](https://github.com/gregorio-project/gregorio/issues/1199). - With thanks to Claudio Beccari (@OldClaudio), adding a commentary no longer generates a bad `\hbox` during TeX processing (see [#1202](https://github.com/gregorio-project/gregorio/issues/1202)).

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The package's Catalogue entry can be viewed at http://www.ctan.org/pkg/gregoriotex The package's files themselves can be inspected at http://mirror.ctan.org/support/gregoriotex

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Thanks for the upload. For the CTAN Team Erik Braun

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