CRUNCH-432: Create JoinStrategy APIs for Scrunch
CRUNCH-414: CSVLineReader-Threshold-Logic

Signed-off-by: Micah Whitacre <mkwhit@apache.org>
CRUNCH-445 Fix class-level javadoc in At, From, To

Fix formatting of code examples in the At, From, and To classes
so that they are readable in HTML javadoc.
CRUNCH-400: Add PipelineResult option to MaterializableIterable
CRUNCH-444: Generate Tuple5..Tuple22 and generalized product Aggregators for Scrunch
CRUNCH-447: Secondary sort and shard for Scrunch
CRUNCH-448: Support for serializing arbitrary case classes, optionally as
fully-specified Avro records.