Added missing primitive type wrappers.
Adjusted API for ozone-scala.

Fixed #16 Hiding extra Iteration Elements in Pact Plan Visualization

wrote first entry in CHANGELOG

renamed variables for gateIndexes

Fixed Branching Plan tests.

Added DanglingPageRank example.
Reworked iterative tests.
Reduced logging verbosity for iterations (temporarily commented out monitoring facility for time tracing)

Implemented custom aggregators (runtime misses iteration head task)

Fixed Cancelling tests.

Adjusted example programs to use runtime context for subtask information.

Temporarily disabled tests for global sorting, which is disabled for the time being.

Cleaned up POM files.

Enumeration of incremental iteration plans complete.

Fixed Local Executor.
Fixed Bug in Delimited Input Formats.
Reworked KMeans tests (both single step and iterative).

Removed Pact Testing Framework for now.