Generate tests from spec document

[epage]

I used "header + fence index within header" to try to give some level of stability to the file names across changes (as compared to using line numbers)

Fixes #129

[arp242]

Ah, I had misunderstood the issue you reported earlier; what I thought you meant was to take the ABNF file and use that to generate a whole bunch of permutations based on the syntax description in there.

[arp242]

Here's a patch to also generate the JSON files automatically: 3b92c71

The JSON files changed because the output is a bit different (ordered alphabetically by key), but they should be semantically identical.

[epage]

Thanks for fixing up the json files! I assumed my formatting was off than expected but I wasn't sure if there was a standard way of generating them (the README doesn't mention a "write out json" for writing tests) and I don't have a go toolchain setup

[arp242]

I wasn't sure if there was a standard way of generating them

There wasn't until I thought of it the other day 🙃 I always did it manually before and then I facepalmed and realized I can use toml-test-decoder for this.

[arp242]

I merged both gen-*.pyfiles togen.py` and merged it; thanks!