Use non-deprecated API.
Reduce the number of node compactions caused by leaf rebalancing, by requiring that an existing entry slot be re-used for the inserted entry. More aggressive rebalancing is possible, but it causes even more compaction overhead with little benefit.
Verification must stop if observer says so.
Update for version 1.1.3.
Fix corruption when reopening database, caused by aggressive page recycling.
Update for version 1.1.4.
Merge remote-tracking branch 'remotes/origin/master' into compress