New: $st->fromHost()->getSshUsername() / getSshKeyFile()
New: $st->usingHost()->runCommandAsUser*()
New: add sshKeyFile setting to a VM hostdetails
Fix: ansible provisioner now gets SSH username, SSH keyfile details from the hostDetails
New: $st->usingProvisioningDefinition()->usePlaybook()->withHost()
New: common base class for Ec2Instance prose modules, extra API calls, extra robustness
New: expectsEc2Image()
Fix: make sure usingEc2Instance() has the latest data from EC2
New: usingEc2Instance()->createImage()
Fix: remove some debugging code
New: fromEc2()->getImage()
Fix: better sshKeyFile support
New: completed all operations on an EC2 VM