Refactored pione-client.
Refactored Component::Package.
Updated the test of package.
Updated gitignore.
Added rehearsal results of MakePair.
Enabled to validate rehearsal reuslts.
Added expected result of HelloWorld.
Updated LoopByTouch.
Fixed the bug of take_all!.
Make FlowHandler clean the domain of task before distribute it.
Added WorkflowPatterns No.38 General Synchronizing Merge.