[!CAUTION] This is a prerelease intended for test and experimental purposes only!

• Allow changing collate, sort and partial constraints for indexes on system fields.

• Added system cron to run once a day PRAGMA wal_checkpoint(TRUNCATE) as a fallback to assist in high traffic applications where the autocheckpoint may not be able to take its turn. Similar to the PRAGMA optimize, its execution is optional and even if it is not supported by a custom driver it will result only in a WARN app log.

Unless something else show up, this is expected to be the last release candidate before the final v0.23.0, planned to be released in the next 1-2 weeks. Because there were several experiments and changes in the rc versions regarding the migrations, if you had a v0.22.x app that you've migrated already to some of the other rc versions and have a full collections snapshot generated for it, note that you may have to regenerate the snapshot again (hopefully this would be the last time).