Update for Cascading 3.0

[asfimport]

The code in parquet-cascading is adapted to the API as of Cascading 2.5.3

Some incompatible changes were introduced in Cascading 3.0. This patch forks the parquet-cascading module to also provide a parquet-cascading3 module, which is about identical save for overloads which changed from requiring a Foo to requiring a Foo<? extends JobConf>

Environment: Cascading 3.x
Reporter: Cyrille Chépélov / @cchepelov
Assignee: Cyrille Chépélov / @cchepelov

Externally tracked issue: #284

_{Note: This issue was originally created as PARQUET-480. Please see the migration documentation for further details.}

[asfimport]

Cyrille Chépélov / @cchepelov:
Pull request here: #284 cc @julienledem

[asfimport]

Julien Le Dem / @julienledem:
Issue resolved by pull request 284
#284