These settings are mostly for advanced users with particularly large or small servers. If you don't know what you're doing, you could probably break Regionerator badly (i.e. a batch size of 1 and a batch delay of 5 minutes would cause the queue to take forever to drain, meaning flags would likely fail to save).
Changed queue to drain at a rate of 1 region per 0.5 seconds instead of 2.5 seconds.
Added minimum time between expiration checks to reduce churn
Added soft max cache size (cache is allowed to exceed max size between expiration checks)
Hooks:
Fixed Civs hook not enabling without soft dependencies (namely WG and MMOItems) being present
Because the hook needs to be precompiled and therefore is a huge pain to monitor and maintain, the hook is officially EoL. If the API used changes, that's it, goodbye hook.
Fixed WG hook causing problems without WG present
Fix WG hook not being declared capable of async operation
Using exclusively async-capable hooks provides a huge speed improvement, so this may lead to huge performance gains during cycles for some people.
Miscellaneous:
Changed flagging to distribute load more evenly
Reduces likelihood of a lag spike when updating visiting flags by reducing the number of simultaneously considered players
Fixed completely fresh regions being deleted when fresh chunks are configured to be preserved
Moved some utilities to a more heavily tested library