Implementation-agnostic implementation of JSON reference resolution

 A way for e.g. JSON Schema tooling to resolve the $ref keywords
 across all drafts without needing to implement support themselves.
 .
 This library is meant for use both by implementers of JSON
 referencing-related tooling – like JSON Schema implementations
 supporting the $ref keyword – as well as by end-users using said
 implementations who wish to then configure sets of resources (like
 schemas) for use at runtime.
 .
 This package installs the library for Python 3.