- update to version 4.3.2
* now the decorator module can decorate generator functions by
preserving their being generator functions
* Set `python_requires='>=2.6, !=3.0.*, !=3.1.*'` in setup.py
- update to version 4.3.1
* Added a section "For the impatient" to the README, addressing
an issue raised by Amir Malekpour.
* Added support for Python 3.7.
* Now the path to the decorator module appears in the
tracebacks, as suggested by a user at EuroPython 2018.