Added standard unit tests for SqsQueue and SqsJob which are compatible with 4.1+
Removed unused use statement
Update typo in docblock for Worker.php

*cough* I am going to be that guy... there is a typo in your docblock, bro. =).

Targets 4.1 branch as per comment in pull request #4664
Merge pull request #4678 from timgws/patch-2

Update typo in docblock for Worker.php
performUpdate should return false if no update is performed
Merge pull request #4773 from zupolgec/4.1

performUpdate should return false if no update is performed
Merge pull request #3777 from dcarrith/adding_sqs_unit_tests_4.1.x

Adding sqs unit tests to the 4.1.x branch
Remove broken community tests.
return void if nothing was updated on the model

Signed-off-by: Suhayb El Wardany <me@suw.me>
Merge pull request #4813 from suwardany/bugfix/model-performUpdate

[bugfix] Fixes a bug introduced by #4773
Merge pull request #4631 from GrahamCampbell/4.1-router

[4.1] Removed Unused Use Statement