François Pantigny submitted an update to the
nicematrix
package.
Version number: 5.19 2021-07-23 License type: lppl1.3
Summary description: Improve the typesetting of mathematical matrices with PGF
Announcement text: ----------------------------------------------------------------------
New key 'tikz' for the command Block.
Correction of several bugs. ----------------------------------------------------------------------
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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Thanks for the upload.
For the CTAN Team Ina Dau