Tasktiger

* When raising `RetryException` with no `method`, use task decorator retry method if set ([356](https://github.com/closeio/tasktiger/pull/356))

* Add `tiger.get_sizes_for_queues_and_states` ([352](https://github.com/closeio/tasktiger/pull/352))

* First version using the automated-release process

* Log task processing in sync executor ([347](https://github.com/closeio/tasktiger/pull/347))
* Test and Docstring improvements ([338](https://github.com/closeio/tasktiger/pull/338), [343](https://github.com/closeio/tasktiger/pull/343))

* Stop heartbeat thread in case of unhandled exceptions ([335](https://github.com/closeio/tasktiger/pull/335))

* Heartbeat threading-related fixes with synchronous worker ([333](https://github.com/closeio/tasktiger/pull/333))