Fork shiny and try to make fixes?

[mccalluc]

Since we're going to be using this library, and since it looks like they are receptive to PRs, we should try fixing some of the things in WHAT-WE-LEARNED, to make our own lives easier, if nothing else.

• Probably fork shiny to my own space, figure out the docs build, and make a PR with some fixes, just to understand the process.
• Then, maybe developers will -e install from a local checkout of shiny, instead of pypi? We would need to be sure that we just make bug fixes, rather than any changes that are actually necessary for operation.
• Alternatively, could imagine a git submodule, but that feels like overkill.