* add separate module picocli-annotation-processing-tests for testing (com.google.testing.compile:compile-testing requires Java 8)
* (API) add ITypeInfo that encapsulated type information available at both runtime and compile time
* add RuntimeTypeInfo implementation used at runtime (reflection)
* (API) add IAnnotatedElement as public API for method and fields annotated with any picocli annotation
* internal class TypedMember now implements IAnnotatedElement
* (API) CommandSpec.resourceBundleBaseName() getter and setter
* (API) Messages.resourceBundleBaseName() getter
* (API) ArgSpec.userObject() getter
* (API) made MethodParam public
* IGetter/ISetter implementations now have informative toString() methods
* removed internal class ArgsReflection
