Merge branch 'master' of github.com:NCATS-Tangerine/tranQL

Author: stevencox

README.md

@@ -173,7 +173,7 @@ optional arguments:
   * [X] Does the standard API need to support multiple values per question-graph node? (So far, looks like no)
   * [X] Queries with bidirectional links.
   * [X] Validate query terms exist in the biolink-model.
-  * [ ] Predicates in queries.
+  * [X] Predicates in queries.
   * [ ] Enforce constraint identifiers are sub-types of biolink-model parent types where this info exists.
   * [ ] Index previous answer via standard API "knowledge_maps" construct.
   * [ ] Add export to and possible integration with Neo4J.