* update version to 2.2.4

* Fixed Incorrect local IP address judgment of IPv6. (#140)

* Fixed DateTime localization format conversion error to sql.(#139)

* update version to 2.2.5

* remove unused constructor.

* Fixed DateTime localization format conversion error to sql.(#139)

* Improved logging

* support RabbitMQ cluster configuration.

* Fixed dashboard message page re-requeue and re-executed  operate bug. (#158)

* refactor code

* refactor log extensions.

* refactor retry task processor.

* Fixed  configuration options of FailedThresholdCallback could not be invoke when the value less then three.  (#161)

* update samples.

* Fixed SendAsync or ExecuteAsync recursion retries bug. (#160)

* Fixed SendAsync or ExecuteAsync recursion retries bug. (#160)