MDO 0.6 Released

• introduce Generator feature
• new fetch* methods of MDO\Select: fetchAll(), fetchAssoc(), fetchDataObject(),fetchFunc(), fetchPairs(), fetchCol(), fetchAssocMap()
• new yield* methods of MDO\Select: yieldAll(), yieldAssoc(), yieldDataObject(), yieldFunc(), yieldPairs(), yieldCol(), yieldAssocMap()
• new get_Generator() / get_Array() methods of MDO\Statement
• deprecate iterators
• require php 5.5+