• switch back to letting libmysql manage all allocation/thread-state/freeing for the connection
• cache various numeric type conversions in hot-spots of the code for a little speed boost
• ActiveRecord adapter moved into Rails 3 core
  • Don't worry 2.3.x users! We'll either release the adapter as a separate gem, or try to get it into 2.3.9
• Fix for the "closed MySQL connection" error (GH #31)
• Fix for the "can't modify frozen object" error in 1.9.2 (GH #37)
• Introduce cascading query and result options (more info in README)
• Sequel adapter pulled into core (will be in the next release - 3.15.0 at the time of writing)
• add a safety check when attempting to send a query before a result has been fetched