- update to 4.1.2:
* Made it possible to define decorators converting coroutines into regular
functions.
* Changed the documentation build system to sphinx and uploaded the docs
on readthedocs.org.
* Support for Python 3.5 coroutines defined with `async def`, thanks to
Victor-Nicolae Savu who raised the issue of `iscoroutinefunction` not
giving the right answer for coroutines decorated with the decorator module.