This release has a very significant implementation change. Previously Raft log entries (which store the SQL statements sent to rqlite) were JSON-encoded, but that has been changed to Protobufs. Furthermore, a log entry will be compressed before it is written to the log, if that means a reduction in bytes written to disk.
If you've previously tried out rqlite with larger SQL statements, or batches of SQL statements, you might like to try out this version. You may see better and more reliable performance.
My basic testing also shows that write performance has increased by about 10% (though I was hoping for more).
Philip