See if we can catch Storm's System.error's and recover
Added comment to explain where/how we use batchers
Merge pull request #293 from twitter/feature/add_comment_on_batching

Added comment to explain where/how we use batchers
clean up creation of Batches in tests
Remove uses of java.util.Date, use more Timestamp, and replace some Long usages too
Fix up more tests
Add description comment
Add Timestamp.Max, Timestamp.Min
Add prev and next to Timestamp
Add toDate to the Timestamp
Address comments on github
Move arbitary timestamp to the right file
Added test for batcher's currentBatch, fixed bug
Fix up some more tests
Add support for more Batchers in testing
More Date -> Timestamp, add a Timestamp.now
Merge pull request #295 from twitter/feature/remove_java_util_date

Feature/remove java util date
fix the tests for multiple batches
Merge branch 'develop' into scalding-batch-tests

Conflicts:
	summingbird-scalding/src/test/scala/com/twitter/summingbird/scalding/ScaldingLaws.scala
Fixes service testing for empty services