Local implementation of WorkflowOperations behaves more like SWF.
Multithreaded cancelable retries were needed for retries with arbitrary max attempts so that they are not able block workflows in unit tests that retry forever (or until a time out).
The workflow now waits for all forked work to be completed, so that asserts in a unit test have their final results.
Scoping of tries and retries was needed so that nested work can be analyzed for completion.
Exception handing for tries and retries now propagates like SWF.
remove usages of cancelable with the extra L
ignore CancellationExceptions
making CodeNarc happy
fixed spelling mistake
Merge pull request #16 from claymccoy/multithreadedLocalImpl

Local implementation of WorkflowOperations behaves more like SWF.