This instance will be upgraded to Heptapod 1.3.1 (GitLab 16.9.3) on 2023-03-28 at 17:00 UTC+1
See
https://foss.heptapod.net/fluiddyn/fluidsim/blob/branch/default/fluidsim/base/time_stepping/pseudo_spect.py#L163
https://foss.heptapod.net/fluiddyn/fluidsim/blob/branch/default/fluidsim/base/time_stepping/pseudo_spect.py#L123