Test Vectors

[expede]

From a discussion in #230, it would be helpful to have test vectors for all of these keys. One possible solution would be a column next to description that either contains the test vectors directly, or points to an external document where they can be found.

[rvagg]

I can't find the issue right now, but one of them in here talks about converting the primary entry-point to be a JSON doc, which would be much easier to extend with fields like "fixtures" rather than just adding more ordered columns. I think there was some agreement about making it compile-to-CSV so table.csv remains intact as is but the table.json is what we edit to add new entries.