Among the 1 debian patch available in version 2.2.1-1 of the package, we noticed the following issues:
commit c37aade7f2ce59299801b5a80b279c78f4e356a0 Author: Bastian Germann <bage@debian.org> Date: Sun Oct 22 21:11:49 2023 +0200 Drop unused B-D sfftw-dev