This closes #2324

Makes the JUnit test utils (TestLogger, retry rules, ...) properly available to
other projects without the 'flink-core' test-jar, via the 'flink-test-utils-junit' project.

Makes the ForkableMiniCluster, TestEnvironment,  and other test utilities available in the 'main'
scope of the 'flink-test-utils' project.

Creates a 'flink-test-utils-parent' project that holds the 'flink-test-utils-junit' and
'flink-test-utils' project.

Also moves some tests between projects and inlines some very simple utility functions in
order to simplify some test jar dependencies.

This closes #1915

This closes #1796
This closes #666

Consolidation is done via plugin management.

Closes #1753

[FLINK-3550] [examples] Rework WindowJoin to properly demonstrate continuous window joins (Java + Scala)

This closes #1533

- add suffixes
- adapt change-scala-version script

This closes #1529.

[FLINK-3195] [examples] Consolidate batch examples into one project, unify batch and streaming examples under on parent project

0.10-SNAPSHOT continues on branch release-0.10

This closes #996

Closes #851

Closes #816

- The description of the input format for the graph examples
  showed an example input as having a newline at the end
  of the last line, but CsvInputFormat doesn't allow that
  (it says "Row too short" for the empty line).
- Fixed a link to local_execution.html in a javadoc.
- ConcatenatedExtract had a typo in its name.
- The creation of the jar for the SessionWindowing example was missing
  from the pom.

Closes #809

The purpose of this was to serve as an example for a blogpost.
Moved it to another branch and removed it from the master.

Closes #777

Adds pipeline comments

Adds pipeline IT case

[FLINK-2050] [ml] Introduces new pipelining mechanism using implicit classes to wrap the algorithm logic

This closes #704.

[FLINK-1855] [streaming] Add WordCount class into WindowWordCount and SocketTextStreamWordCount example jars

Closes #644

This closes #497

This closes #454

Removed obsolete examples
Updated StockPrices example
Updated build

This closes #275

Removed Disclaimer file
Eliminated unnecessary incubating substrings
Bumped version to 0.9-SNAPSHOT

Replacing the EventCollector and the MemoryArchivist.

Finished EventCollector and adjusted ExecutionGraph and ExecutionVertex to register actors as listeners.

The current examples show-case the API, more meaningful examples are coming for the 0.9 release.

This closes #204