[FLINK-1005] By default, new objects are created for each element in group operations
[FLINK-1214] Prevent partitionings on subsets of fields from being pushed down
Add test case for TaskManager connection loss, leading to task failure.
[FLINK-1220] Promote various log statements to INFO level. Add log statements for assignment locations
[FLINK-1222] Tasks send close acknowledgements early.
[runtime] In local mode, make sure taskmanagers have completed registration before starting a job.
[FLINK-1215] Fix spurious failures when creating output directories due to I/O races
[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.