0.9.0

Added

• Support for Swift 2.2 (#60). Thanks @ikesyo!
• A public initializer to NoOptions so that tests can be written for commands that take NoOptions (#55). Thanks @younata!

Improved

• BREAKING CHANGE ⚠️ Option now requires a default value and supports Optional arguments (#58). Thanks @mdiep and @ikesyo!

Thank you to @ikesyo for improvements to the codebase! Thank you to @mdiep and @ikesyo for reviewing pull requests!