Additional logging during deployments to show details for which dynos will be removed.
More robust checking in , now guarantees that the queried dyno will belong to the right app in the LB config.
New command: clone to copy an app into a new app, use `apps:clone -o<name>/--oldApp=<name> -n<name>/--newApp=<name>`.
Eliminates the potential for duplicate dyno port assignments with concurrent deployments of different apps.