* initial implementation of taskSets. Fixed a bug with ECS Service where task_definition was a required parameter.
* Added update_task_set and tests. DRYed up ClusterNotFoundException. General cleanup.
* Added support for filtering tags on include parameter to describe_task_sets. Added additional tests.
* Fix copy/pasta in ClusterNotFoundException
* styling updates
* Added TODO for delete_task_set force parameter
* Updated multiple function and constructor calls to use named variables. Updated tests to reference variables instead of hardcoded strings.
* Run black for formatting
* Updated create_service function call to use named variables