Release 1.5.1

Enhancements:

• Switched JSON parser from ujson to circe to avoid loss of
  precision in large integers in standing queries (Further support for
  large integers coming soon)
• REST API documentation style and readability updates
• Added documentation for graph AI use cases
• Improved performance of Cassandra persistor by reducing load and
  latency during ingest

Bugfixes:

• Reduced log noise when performing more than 2 operations on a node as
  part of a single message
• Fixed an issue with intellij project import