Versions where updated in documentation that is included in the
generation of our reference documentation.
Also, to clean up version management within the samples, the
spring-cloud-task-dependencies was introduced into each pom so that
versions are managed at that level.
Updated a version number
DeployerStepExecutionHandler
Created a PartitionHandler that delegates to a TaskLauncher from Spring
Cloud Deployer to execute workers.
Resolvesspring-cloud/spring-cloud-task#109
Updates per code review