1-day Sage coding sprint end of September

[Matthias Koeppe]

I propose that we hold a 1-day coding sprint at the end of this month.

Anyone interested to participate, please fill out this poll so that we can find a day that works well: https://whenisgood.net/sagequinox2022

Collaborations on all topics are welcome.

I hope to work on the following in this coding sprint: 

1) Get cysignals, cypari, cypari2 ready for Python 3.11 (see https://trac.sagemath.org/ticket/32360, https://trac.sagemath.org/ticket/33842)

2) Wheel building scripts (https://trac.sagemath.org/ticket/31251) for pplpy, pynormaliz, cypari2