moved ThreadLocal feature from History to Testory
moved History to new package named plumbing
introduced PlumbingException and used it in History
extracted Purging from History
extracted Mocking from History
extracted Stubbing from History
extracted Calling from History
extracted Inspecting from History
extracted Capturing from History
refactored History into immutable value object
created shorthand log(Object) for logging event
created latest(History)
rewritten Purging to use purge/mark methods
moved all history-related code to separate classes in plumbing package