[FLINK-1170] Fix faulty input split localization
Pass hostname to split assigner
Avoid clashes by only using the first component of the fully qualified hostname
[FLINK-1170] address pull request review comments

This closes #158
Prevent RPC service from blocking on exceptions during task cleanup on canceling.
[FLINK-1171] Move Scala API tests to flink-tests project

This closes #159
[FLINK-1164] Gracefully handle empty (identity) iterations
[FLINK-1167] Handle unions at the root of the iteration

This closes #160
[scala] Change CaseClassSerializer/Comparator to not use For-Loop
[build tools] update release sciprts
Set version to 0.8-incubating-SNAPSHOT
[FLINK-1189] [streaming] Added cross operator

Conflicts:
	flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/datastream/ConnectedDataStream.java
[FLINK-1189] [streaming] Temporal cross refactor

Conflicts:
	flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/datastream/ConnectedDataStream.java
[FLINK-1175] [streaming] GroupBy updated to allow multiple field and keyselector groupings
[FLINK-1188] [streaming] Updated aggregations to work also on arrays by default
[streaming] Removed obsolete state objects from streaming-core
[FLINK-1185] [streaming] OperatorState and StateCheckpoint classes and implementations added for state checkpointing and rebalancing
[FLINK-1187] [streaming] StreamingRuntimeContext added with API support for registering fault tolerant state objects for the operators
[FLINK-1178] Changed type preference to ValueType, WritableType, CaseClassType

This closes #162
Remove unnecessary final modifier in PlanExecutor.loadExecutorClass method

Remove unnecessary final modifier in PlanExecutor.loadExecutorClass private static method because private means you can not override this method.

Author: Henry Saputra <henry.saputra@gmail.com>

Closes #163 from hsaputra/remove_unneeded_final_privatetatsic_planexecutor and squashes the following commits:

fe7afc7 [Henry Saputra] Remove unnecessary final modifier in PlanExecutor's private static method.
[FLINK-1194] Fix Java quickstart archetype POM file

This closes #165
Add DeltaPageRank example