CTAN update: nicematrix

[CTAN Announcements]

François Pantigny submitted an update to the

                nicematrix

package.

Version number: 5.18 2021-07-15
License type: lppl1.3

Summary description: Improve the typesetting of mathematical matrices with PGF

Announcement text:
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New command \RowStyle to fix formatting instructions for the whole row.

New optional arguments _ and ^ for subscripts and superscripts of the command \SubMatrix.

Correction of several small bugs.
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This package is located at 
   https://mirrors.ctan.org/macros/latex/contrib/nicematrix

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

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Please join a user group or donate to one, see https://ctan.org/lugs

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   Thanks for the upload.

     For the CTAN Team
    Ina Dau

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