work on #401
comment
work on #401 and other metamodel issues
Metamodel #508: add ClassDeclaration.objectValue
Test for #508: ClassDeclaration.objectValue and ValueDeclaration.objectClass
refresh docs for Exception/Error/Throwable
minor
minor
fix code block
more examples in doc
ups
more doc
minor
2 more examples
Add Iterable.interpose()
document interpose()
more doc enhancements
minor
more doc improvements
ups