[FLINK-1186] Fix wrong flat key position when using expression key for nested tuples

This closes #169
[FLINK-1323] Refactor I/O Manager Readers and Writers to interfaces, add implementation that uses callbacks on completed write requests.

 - This change also allows for a very simple way of plugging in a synchronous version of the I/O manager.

This closes #193.
[FLINK-983] Fix WebClient truncated function names

This closes #190.
[FLINK-1223] Allow value escaping in CSV files

- Strings can now contain " quoted characters
- Skip trailing whitespace after quote

This closes #187.
[FLINK-1233] Improve error message when not enough slots are available to schedule a task.
             Add additional test case for concurrency on the scheduler.
Improved input type inference, bug fixing, code simplification

This closes #176
[FLINK-1235] Compiler accepts iterations referenced from the static path of other iterations
 - Fix NepheleJobGraphGenerator to support iterations referenced on the static path of another iteration
 - Catch nested iterations on dynamic path properly in optimizer (and give a good error message)
[FLINK-1226] Add API support for passing Configurations to InputFormats

This closes #196
[FLINK-1230] Add documentation and an example for collection-based execution

This closes #195
[FLINK-1221] Use the source line as the default operator name

This closes #197.
[streaming] Removed obsolete Join example
[FLINK-1204] [streaming] Individual, self-contained packaging for streaming examples
[streaming] StreamExecutionEnvironment rework + user class loader fix for cluster deployment
[streaming] Example cleanup + windowJoin fix
[streaming] Examples refactor and packaging update
Fix caching of receivers
[scala] Self-contained build for scala examples

This closes #199.
[FLINK-1218] Replace new Integer with Integer.valueOf in tests

This closes #183.
[FLINK-1239] [streaming] IterateExample fix and parallelism setting in StreamExecutionEnvironment made public

Conflicts:
	flink-addons/flink-streaming/flink-streaming-examples/src/main/java/org/apache/flink/streaming/examples/iteration/IterateExample.java
[FLINK-1233] Fix flaky AggregateITCase