Patch version bump

Remove `always_use_private_address` since it's bad

Minor version bump

Add block_device_mappings to launch_configurations

Minor version bump

Include the ability to use only private IP addresses

Patch version bump v1.1.0

* Allow Aerosol::Deploy#is_alive? to accept a command string

Patch version bump v1.0.2

Patch version bump v1.0.1

Major version bump (v1.0.0)

Removed dependency on fog, and add support for sts:AssumeRole

bump version

Minor version bump v0.5.0

Don't tail logs by default, but allow them to be enabled

Patch version bump (v0.4.3)

Bug Fixes:

Make ssh connections threadsafe within the runner