Add two additional fields to `Artifact`: `defined_locations` and
`preferred_artifacts`. These are pieces of metadata that allow
navigation between multiple PTML-enabled documents.
Add categories in the pipeline, allow an artifact to have a category
specified which allows it to be shown or hidden by default. Adapt the
CLI tools to hide artifacts of the category that don't
`show_by_default=True`.
Allow the `configuration` field of a pipe in a pipeline yaml file to be
of any type. When constructing the pipe object, the object will be
re-serialized via `yaml.dump` before being passed to the constructor.
Now pype has an `autocomplete` command usable to enable autocompletion
and revng2 now is based on `pype`, modifying its defalults and
injecting new commands.
Giacomo Vercesi