Spec inconsistencies and like/match.

There's the spec in this [repo](https://github.com/persvr/rql/tree/master/specification) as well as this page:
https://doc.apsstandard.org/2.1/spec/rql/
which references this repo

The later specifies a "like" operator for string matching with wildcards. I've also seen references to this but named "match" instead of like including in the [javascript](https://github.com/persvr/rql/blob/master/query.js) implementation in this repo. But it doesn't show up at all, either as like or match, in the spec in this repo.

So the most important question I have is:

**Where is the official spec for RQL, most importantly around operators and their definitions? Maybe there's another place that I missed?**

Depending on the answer to that and what the spec is I may have follow up questions for this javascript implementation.