- Now need a call to DependencyManager::set(...) that support
variable arguments number and type
- Now support destroy operation via DependencyManager::destroy()
- Now support inheritance. All inheritance relationship need to
be specified via DependencyManager::registerInheritance<Base,
Derived>() before any call to the DepedencyManager involving Base.
- Dependencies should now inherit from the class Dependency as
well as using SINGLETON_DEPENDENCY