anchor.diff:  
   * The closure wrappers classes `GFunction`, `GSupplier`, `GConsumer` have been deprecated.
   ** In Groovy, a closure can be specified using `as Function` and thus, these wrappers are not needed.
  +* The `GremlinExecutor.promoteBindings()` method which was previously deprecated has been removed.
   
   Hadoop-Gremlin Updates
   ++++++++++++++++++++++
  
positive.code: * Entire TinkerGraph instances can be serialized over Gryo.
  * Hadoop1 support has been dropped. Hadoop2 is now supported. Giraph 1.1.0 is now supported and Spark of Hadoop2 YARN.
  * The implementation and semantics of `GraphTraversal.group()` has changed. The previous model is deprecated and renamed to `groupV3d0()`.
  
  Please see the link:https://github.com/apache/incubator-tinkerpop/blob/3.1.0-incubating/CHANGELOG.asciidoc#XXXXXXXXXXXXXXXXXXXXXXXXXXXX[changelog] for a complete list of all the modifications that are part of this release.
  
  
negative.code: Graph Traversal Updates
  +++++++++++++++++++++++
  
  There were numerous changes to the `GraphTraversal` API. Nearly all changes are backwards compatible with respective
  "deprecated" annotations. Please review the respective updates specified in the "Graph System Users" section.
  
  Element Removal
  +++++++++++++++
  
  `Element.Exceptions.elementAlreadyRemoved` has been deprecated and test enforcement for consistency have been removed.
   Providers are free to deal with deleted elements as they see fit.
  
  See link:https://issues.apache.org/jira/browse/TINKERPOP3-297[TINKERPOP3-297] for more information.
  