Cascading 3.3 WIP

Just a heads up we are finishing up work on a 3.3 WIP, so please give it a spin.

https://github.com/cwensel/cascading/tree/wip-3.3

For the most part, there are improvements to the Hadoop/Tez PartitionTap that make it much more reliable when sinking to Amazon S3, and when using the Taps within a Cascade.

There was also a massive speedup when sourcing from hundreds/thousands/millions of partitions.

The CHANGES.txt file has more details.

As always, the WIP page has all our latests builds.

And every build is in our maven repo:

http://conjars.org/search?q=3.3.0

Also a big thanks to the team at Homeaway for sponsoring the PartitionTap fixes and improvements.