Comment (by Zach Etienne):

Thanks for creating this patch! One comment: Are we sure we want to use \today, and not the date of the git commit id? If the latter is impossible, then maybe we could just make clear that the documentation was generated \today.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2330/include-date-of-build-and-git-hash-in