3.0.0

Breaking

• Require minimum Swift 5 / Xcode 10.2 / Ruby 2.3.
• Standardize all APIs to not require a leading name arg label.
• Retire @dynamicMemberLookup support now the level of support from Swift is clearer. May revisit this in future.

Enhancements

• Implement class and singleton-class methods in Swift.
• Define classes and modules from Swift.
• Add module mix-in functions to RbObject.
• Bind Ruby objects and methods directly to Swift objects and methods.
• Add throwing conversion as alternative to optional initializer.
• Add RbMethod.callSuper() to call superclass method.