ExtensionsにOnSuccess追加
Merge pull request #2 from oc-ratih/TaskUtility-OnSuccess

ExtensionsにOnSuccess追加
IteratorTask,テストケース追加

WhenAny, await task, タイミングテストの追加
Merge branch 'master' of https://github.com/OrangeCube/IteratorTasks
Merge pull request #3 from oc-ratih/addIteratorTestCase

WhenAny, await task, Timingのテストケースの追加
Merge branch 'master' of https://github.com/OrangeCube/IteratorTasks