Python-ecs-deploy

--use-latest-task-def Will use the most recently created task definition as it's base, rather than the last used.`

Merged in several PRs:

- 112 - Avoid Bash Expansions
- 118 - Update only task definition (without service)
- 141 - Add support for "force new deployment"
- 148 - Add "skip deployments check" to speed up deployment and not wait for deployment to finish before exiting
- 150 - Add --run-task option for running one off tasks (not ongoing service)

Big thanks to fbenz, eguven, kakakakakku, Kostanos, and nazo for their contributions to this release.