Potentially bless a file extension?

[rdmurphy]

Would love to add this as a reader to quaff, but would need some way to say “treat this as a Betty file.”

If it passes all ArchieML tests and returns the same thing I could also potentially include a flag that uses Betty instead.

Great work!

[thomaswilburn]

This parser just takes a string as input, so I don't think the file extension actually matters. Our rig just reads *.txt this way. I don't have any strong opinions about picking a "real" file extension for it.

The NYT tests are checked in, and apart from the ones that would conflict with the multiline:: ... ::multiline syntax, they all pass as of today. I think a flag would be fine. This is basically a superset of ArchieML, not a true fork.