added explicit license information to setup.py

switched from static determination of the library options to using build_ext.get_ext_fullpath().

removed dead comment

calling this "1.1"

example of how to run the test suite

improving the text

support FreeBSD, and finish up with the final setup.py and __init__.py

looks like I should use EXT_SUFFIX instead of SOABI

changes to support CentOS (and presumably other Linux-based OSes) as well as macOS.

simple unit tests

improve email formatting

fixed formatting

documentation and license

Initial import of my experiment making a C shared library that can be used by both a Python/C and Cython extensions in the same package