|SOURCE|
[System::InputManager]
* AddDevice accepts a pointer to the desired input device to allow for
  communication to occur
[System::Keyboard]
* Removed debug trace messages
[Linux::System::LinuxInputManager]
* AddDevice conforms to the updated base class
* Only events in the queue under Update which are pertinent to input are
  handled, others are pushed back to the head of the queue to be processed
  later
* Removed debug messages