• Added new flag clearExpired which when set to false will prevent expired sessions from being deleted automatically. The default value is true so the default behavior remains unchanged.
• Fix for MySQL warning regarding unnecessary LIMIT 1 clauses. See #82 for more details.
• Throw error when defining an unknown column in the schema option. See #83 for more details.
• Removed deprecated methods (clone, closeStore, defaults, isObject, setDefaultOptions, sync)