If you're reading about this commit from an autogenerated changelog entry, this should have no user-visible impact on how the stubs are interpreted by a type checker; it's just an internal change to how typeshed's tests work.
* Update version field in METADATA.toml.
* Import from collections.abc in Python 3 stub.
* Add six.__author__.
* Annotate PY2, PY3, and PY34 as literals.
* Correctly annotate *_type and replace instances where they were used
as type aliases.
* Use new union syntax in Python 2 stub.
* Use built-in generics in Python 2 stub where possible.
* Renamed _LazyDescriptor to _LazyDescr to match implementation.
* Derive _LazyDescr from object in Python 2 stub.
