Upgrade filesink.
Changes
This MR upgrades the 'postcoh_filesink' element of the pipeline.
This element is only used for debugging purposes, and may not require a full review.
This repeats all changes from !226 (closed) for these files.
References
- Review meeting covering Multiratespiir.c (Let me know if you need access): Recording 2024/05/06
Purpose
I intend to split !226 (closed)'s changes into a number of MRs, which won't be functional code versions themselves, but once complete will encompass the full set of changes to upgrade to py3.
This should provide useful code diffs for reviewers.
Edited by Timothy Davies