Packaging greta for conda-forge

I use conda for most of my work, so I was planning to package Greta for conda-forge while I try it out. For people comfortable with conda, this would be an especially convenient installation method, since tensorflow and tensorflow-probability could be automatically installed as prerequisites. This is mostly just a heads-up to you, but if you’d like I can add anyone on the dev team as recipe maintainers. For R packages this is usually a very small commitment, since the conda-forge tooling automatically creates pull requests for new versions whenever they are released on CRAN, and merges the PR as long as it passes testing on all platforms. As long as nothing goes wrong, it amounts to a few notification e-mails from the bot. You would also get notifications from people filing installation issues at conda-forge if anything ever came up.