Changed - EC2 now creates a temporary security group to use for the initial connection. Adding a security group for steady-state operation will have to be done manually at a later stage. - `destroy_node` now only takes in a node as returned by `create_node`.
Removed - `create_node` no longer accepts the `security_groups` parameter.
0.4.2
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Fixed - Fix crash when creating node with duplicate name. - Increase initial connect timeout from 45s to 90s.
0.4.1
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Fixed - Fix harcoded zone in ec2 provider.
0.4.0
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Added - Make it optional to specify EC2 subnet when there's only one.
Fixed - Restored a check that prevents overwriting existing minions.
0.3.4
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Fixed - Error when cleaning up authorized_keys on ec2.