New module proposal: plotly.io

Hi all,

I wanted to draw your attention to an API design proposal that I posted to the plotly.py issue tracker yesterday (https://github.com/plotly/plotly.py/issues/1098).

The proposal is to introduce a new module (tentatively named plotly.io) that will include a consistent set of functions for all of the supported Figure input/output operations. This module would also serve as the landing spot for our integration of orca for programmatic static image export.

Let us know what you think! Please use this thread to discuss general reactions/impressions, and use the GitHub issue for technical suggestions and discussion.

-Jon