Multi plan! and other niceties

This release now is able to handle multiple plans in one action. This is very useful for terragrunt, which runs multiple terraform applys in one go.

Additional changes:

• use a wildcard to match ovm-cli's new filenames with versions
• add start-change and end-change actions
• add some logging of the selected versions
• improve robustness of processing (shell escaping)
• update all the dependencies

See our terraform examples for the most recent patterns to use this actions.