Refactoring and Dummy scheduler for sequential operatios
optimize{} block in
import scala.collection.par.SequentialOptimizeBlock._
moving optimizer to separate package.
fixing style.
fixing FlatHashTable for scala 2.11
Test for detecting speed for small collections,
tweak for sequential scheduler to have lower initialization cost
Optimizing initialization,
tweaking test showing equilibrium
Further tweaks to improve handling of small collections
Hand-written invokeParallelOperation for Sequential scheduler
fixing  style
Merge pull request #14 from scala-blitz/optimized-block

Introducing optimized block.
Speeding up operation initialization.