Tables.jl win!

One of my projects (originally written in the v0.6 days) generates a Vector of structs as its output. In the past I would’ve converted it to a DataFrame or similar with a lot of getfield broadcasts, but I was delighted to find that it Just Works™ under the Tables.jl interface so that I can save it with e.g. CSV without any changes.

Thanks to everyone who helped design and implement this interface!