+### 2.2.0
+* Added pq\Mapper
+* pq\Gateway\Cell is only considered dirty if updated data differs
+* pq\Query\ExecutorInterface::execute()'s 2nd parameter `callable $callback` is
+ now optional
+
+### 2.1.0
+* Added pq\Query\AsyncExecutor::setCallbacks(callable $init, callable $done, callable $then)
+ and removed soft dependency on reactphp/promise
+* Fixed pq\Gateway\Table::with()'s relation handling when source table equals foreign table
+
+### 2.0.0
+* Published documentation
+* Added support for pecl/pq-0.5
+* Refactored relations
+
+