VSTS CI move from 3.7.0-b2 to 3.7 as 3.7 is now available (#937)
VSTS CI move from 3.7.0-b2 to 3.7 as 3.7 is now available (#937)

![yay](https://media.tenor.co/images/c7504b9fb03c95b3b5687d744687e11c/tenor.gif)
tox-dev/tox,Avira/tox,gaborbernat/tox