forthcoming release 1.21

[Daniel R. Grayson]

Dear Macaulay2 authors and workshop participants,

Thank you all for your work for the mathematical community as part of the
Macaulay2 project.

We aim to issue our next binary release of Macaulay2, version 1.21, on November
15, 2022.  If you are working on a package or on Macaulay2 itself and hope for
your latest work to be included, we would like to receive your github pull
request by November 8.

The list of packages to be included with the next binary release of Macaulay2
is visible here:

    https://github.com/Macaulay2/M2/blob/development/M2/Macaulay2/packages/%3Ddistributed-packages

Please ensure your new package gets on it by adding the name of your package to
the end of the list.

The package writing style guide is here:

   https://github.com/Macaulay2/M2/wiki/Package-Writing-Style-Guide

and some information about submitting packages is here:

   https://github.com/Macaulay2/M2/blob/master/M2/Macaulay2/packages/README