Deprecated: query_callback method in StatementConfiguration.
Added: Method 'debug' in StatementConfiguration.
Modified: Callback tests.
Fix: Rename filter method in StatementConfiguration to filter_callback
to avoid name collision in Manager class.
Added: Filter methods 'where' and 'where_not' in Manager class.
Added: Support for @CheckDuplicate annotation.
Updated: Dependencies.
Added: StatementFormatter and CacheKeyFormatter classes.
Deprecated: ValueExport trait.
Modified: Methods in Driver subclasses
Refectoring: ResultIterator class moved to eMapper\Engine\Generic
namespace
Modified: Setting column list dynamically in SelectQueryBuilder class.
Modified: Reuse StatementFormatter and CacheKeyFormatter instances.
Modified: Method clean_options in Manager class renamed to cleanConfig.
Added 'reverse' parameter.
Modified: Read IfNotNull property from argument.