What's Changed
* Put Literal args in code blocks by hoodmane in https://github.com/tox-dev/sphinx-autodoc-typehints/pull/288
* Handle collections.abc.Callable as well as typing.Callable by hoodmane in https://github.com/tox-dev/sphinx-autodoc-typehints/pull/289
* Remove redundant return type for attributes by hoodmane in https://github.com/tox-dev/sphinx-autodoc-typehints/pull/287
* Put rtype before examples or usage section by hoodmane in https://github.com/tox-dev/sphinx-autodoc-typehints/pull/290
* If module is _io, use io instead by hoodmane in https://github.com/tox-dev/sphinx-autodoc-typehints/pull/291
* Handle types from types module by hoodmane in https://github.com/tox-dev/sphinx-autodoc-typehints/pull/292
**Full Changelog**: https://github.com/tox-dev/sphinx-autodoc-typehints/compare/1.20.2...1.21.0