[streaming] Updated streaming groupBy operators to allow grouping on field expressions
[streaming] Aggregation rework to support field expression based aggregations for Pojo data streams
[streaming] Pojo wordcount example added to streaming
[FLINK-1224] [streaming] getExecutionEnvironment method fixed to work properly for StreamExecutionEnvironment
[Flink-1113] clean up JQuery dependencies

This closes #178
[FLINK-1212] Fixed shell script interpreter directive

This closes #180
[FLINK-1213] Added .gitattributes to normalize EOL
[FLINK-1211] Fixed EOL character of Windows Batch files

This closes #181
This closes #179
[FLINK-1215] Increase robustness to spurious failures when creating output directories
Make sure S3 directory paths are suffixed with '/' on creation
[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