Updates to indexing#334

Merged

davidlehn merged 3 commits intomasterfrom

Nov 19, 2019

Commits on Nov 19, 2019

* Indexing on `@type` requires `@type` to be either `@id` or `@vocab`,

gkellogg
authored and
davidlehn
committed
* Indexing on an arbitrary property, not just `@index`.

gkellogg
authored and
davidlehn
committed
Fix lint and string interpolation issues.
davidlehn
committed