Move ./modules to ./src
Add UniformResourceLocator::empty
Add HTTPMessage::toString and family
Fix off by one in pending i/o count on HTTPClient
Remove deprecated createOnDemandOnce SingletonLifetime option
Make SharedObject members const, the counter mutable
Remove deprecated SharedPtr::getObject
New SharedSingleton, resolves destruction of objects with static storage duration.
Reduce the max threads in the Workers unit test
Fix ExitHook to derive from AtExitHook
General refactoring of beast framework classes
Make ChildProcess UnitTest manual since it malfunctions