Make tox config more useful/friendly for running multiple interpreters/versions
Right now tox can be a bit of a pain for dev usage.
This ticket is intended to remove some of the hassle for multiple interpreters/versions, and make the default environments config a bit more useful.
I've identified a few improvements under this theme - these are better described in commits.
atagar: I've got a PR coming soon
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information