Matching URLs

[stuartpb]

This is a significant notion, and one I've probably mentioned before in more issues.

I've been thinking of using match fields like url for parts of the schema that take a url of a form, like password reset tokens. This would use the same matching syntax as Chrome Extension manifests and Greasemonkey @match rules, where it's basically just globbing.

I'm pretty sure that'd be sufficient for any practical use case, but there's also a case that could be made for tighter RegExp-based rules, or rules describing the formats of tokens that get inserted into the URL, or lots of things like that; for now, I think that's best to just not specify at that level of detail, but room should be left for it.

[stuartpb]

#132 is one issue that touches this.

[stuartpb]

Per #308, further discussion around this topic should continue through opws/opws-schemata#15.