Update to CircleCI 2.0

[scjody]

I just noticed that plotly.py is still using CircleCI 1.0. This is being shut down on August 31, so if you want to continue using CI it needs to be migrated before then.

See the official migration documentation for guidance, or the CircleCI team are usually willing to do a lot of this work for us (but someone does need to be available to work with them). To get started with that option, contact [email protected] .

@cldougl @Kully @chriddyp FYI

[Kully]

@chriddyp I just checked the CIRCLE changelog and it looks like Python 3.6 only started being supported in version 2.6.0 (2017-02-04) https://pypi.org/project/tox/

This means we need to port over to circleCI 2.0 if we want to test python3.6 codegen in #942

[scjody]

To be clear: you need to do this by the end of August anyway. I'd get going now.

[scjody]

Just a reminder that this repo still uses CircleCI 1.0, which will no longer be available as of the end of August, so if you want to keep using CircleCI (which I strongly recommend), you need to transition to 2.0 before August 31. You can contact [email protected] for help with this if necessary.

I'm tagging everyone at or affiliated with Plotly who's contributed to this repo in the past month: @jonmmease @xhlulu @michaelbabyn @priyatharsan
plus @cldougl @Kully @chriddyp

[jonmmease]

Done!