* Change the behavior when Pool.kill method called twice or more than twice. * Add Pool.inspect and Pool.cancel method. * Enable to change worker size of Pool instance after created. * Performance tuning. * Stop to support python2.6, 3.1 and 3.2.
* Create actor alias to async decorator. * Add optional arguments 'force' and 'block' to Pool.kill method. * Future.receive method raise DeadPoolError if the Pool is killed before task is done. * Update documents.