Converting binary data to UUID was incorrect when the converting more than 31 bytes. Now always the first 16 bytes are used.

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When using SELECT_FOR_UPDATE_MVCC (lock only the selected rows when using MVCC), the selected rows were sometimes not locked correctly.

When using multi-version concurrency, re-running a prepared statement with the same parameters would sometimes give the same result even if another connection committed a change (the previous result was sometimes re-used incorrectly).

When using SELECT_FOR_UPDATE_MVCC (lock only the selected rows when using MVCC), the selected rows were sometimes not locked correctly.

When creating a database from a recovery script, the same user can now be used (CREATE USER now always includes IF EXISTS).