v0.16.1120

• Breaking: Removed HasRegistrationFor<> and GetRegisteredServices()
  from IServiceRegistration and added them to IResolver instead. The
  methods required that all service registrations went through EventFlow,
  which in most cases they will not
• Obsolete: Marked IServiceRegistration.RegisterIfNotRegistered(...), use
  the keepDefault = true on the other Register(...) methods instead
• New: Major changes have been done to how EventFlow handles service
  registration and bootstrapping in order for developers to skip calling
  CreateResolver() (or CreateContainer() if using the EventFlow.Autofac
  package) completely. EventFlow will register its bootstrap services in the
  IoC container and configure itself whenever the container is created
• New: Introduced IBootstrap interface that you can register. It has a
  single BootAsync(...) method that will be called as soon as the IoC
  container is ready (similar to that of IStartable of Autofac)
• Fixed: Correct order of service registration decorators. They are now
  applied in the same order they are applied, e.g., the last registered
  service decorator will be the "outer" service
• Fixed: Added missing ICommand<,> interface to abstract Command<,> class in
  EventFlow.Commands.