force more recent version of python
force more recent version of python

(workaround for bug in last circle run, suggested on
http://stackoverflow.com/questions/29134512/insecureplatformwarning-a-true-sslcontext-object-is-not-available-this-prevent)

ryanpepper/oommf-python,fangohr/oommf-python,fangohr/oommf-python,ryanpepper/oommf-python,ryanpepper/oommf-python,fangohr/oommf-python,ryanpepper/oommf-python