Add sorted take optimizations
Address some review comments
Merge branch 'develop' into oscar-sortwithtake

Conflicts:
	scalding-core/src/main/scala/com/twitter/scalding/typed/KeyedList.scala
Style changes from scalariform
Step 1 on a bufferedTake monoid for unsorted cases
Option to select the fields for output in TSV

Adding the option to select the fields for output in TSV
Allow a limit to be specified for the number of open files used by a partitioned source
Allows reducer estimation to operate on all hfs taps
Updates default scala version to 2.10.4
Fixes log line placeholder syntax
Adding DailyPrefixSuffixLzoTsv

To handle the path with fixed prefix and suffix.
Removes comment lines
Improve command line handling of the execution app
Adds some output while assembly is building to keep travis happy
Change test runner
Enforce invariant: mapGroup iterators all nonempty

Previously not all fixes in mapGroup were covered
Updates
review comment
Merge pull request #1084 from twitter/fixTests

Adds some output while assembly is building to keep travis happy
Merge branch 'develop' into FixExecutionApp