ro-crate-py 0.7.0

What's Changed

• Fix default workflow types initialization by @simleo in #124
• Support detached crates by @simleo in #119
• Allow additional types for root dataset by @simleo in #126
• Entity method for appending to property values by @simleo in #127
• Cleanup by @simleo in #129

Full Changelog: 0.6.1...0.7.0