Apache CouchDB full changelog

Features:
#5626, #5665: Debian Trixie support
#5709: Automatic Nouveau and Clouseau index cleanup
#5697: Add UUID v7 as a uuid algorithm option. The default is still the default sequential algorithm.
#5713, #5697, #5701, #5704: Purge improvements and fixes. Optimize it up to ~30% faster for large batches. max_document_id_number setting was removed and max_revisions_number set to unlimited by default to match _bulk_docs and _bulk_get endpoints.
#5611: Implement the ability to downgrade CouchDB versions
#5588: Populate zone from COUCHDB_ZONE env variable in Docker
#5563: Set Erlang/OTP 26 as minimum supported version
#5546, #5641: Improve Clouseau service checks in clouseau_rpc module.
#5639: Use OS certificates for replication
#5728: Configurable reduce limit threshold and ratio
Performance:
#5625: BTree engine term cache
#5617: Optimize Nouveau searches when index is fresh
#5598: Use HTTP/2 for Nouveau
#5701: Optimize revid parsing: 50-90% faster. Should help purge requests as well as _bulk_docs and _bulk_get endpoints.
#5564: Use the built-in binary hex encode
#5613: Improve scanner performance
#5545: Bump process limit to 1M
Bugfixes:
#5722, #5683, #5678, #5646, #5630, #5615, #5696: Scanner fixes. Add write limiting and switch to traversing documents by sequence IDs instead of by document IDs.
#5707, #5706, #5706, #5694, #5691, #5669, #5629, #5574, #5573, #5566, #5553, #5550, #5534, #5730: QuickJS Updates. Optimized string operations, faster context creation, a lot of bug fixes.
#5719: Use “all” ring options for purged_infos
#5649: Retry call to dreyfus index on noproc errors
#5663: More informative error if epochs out of order
#5649: Dreyfus retries on error
#5643: Fix reduce_limit = log feature
#5620: Use copy_props in the compactor instead of set_props
#5632, #5627, #5607: Nouveau fixes. Enhance _nouveau_cleanup. Improve security on http/2.
#5614: Stop replication jobs to nodes which are not part of the cluster
#5596: Fix query args parsing during cluster u

Fix for CVE-2023-26268, the details of which will be released in 7 days
Improve JavaScript process management
Fix quoting issue with `remsh`
Allow configurable timeouts for _view and _search
Proxy auth can now use one of the configured hash algorithms from chttpd_auth/hash_algorithms to decode authentication tokens
Bump recon to 2.5.3

Features and Enhancements:
When a client disconnects unexpectedly, CouchDB will no longer log a “normal : unknown” error. Bring forth the rainbows.
The Gravity Falls gnome pukes some rainbows for us.
Drilldown parameters for text index searches may now be specified as a list of lists, to avoid having to define this redundantly in a single query. (Some languages don’t have this facility.)
The new [chttpd] buffer_response option can be enabled to delay the start of a response until the end has been calculated. This increases memory usage, but simplifies client error handling as it eliminates the possibility that a response may be deliberately terminated midway through, due to a timeout. This config value may be changed at runtime, without impacting any in-flight responses.