The Great Refactor has begun with Window.hpp.
Added parameters to Window class constructors.
Added PrimaryWindow which contains AuxiliaryWindows.  Now PrimaryWindow is the base of ClientWindow and RootWindow.
Added implementations of the window classes.
Exclude all components that have not yet been re-evaluated.
Re-evaluated the WindowManager interface.
Began the default window manager implementation.
Added the DisplayServer interface.
Made Initialize pure virtual and the private members of DisplayServer protected.
Added the basic implementation of the base part of DisplayServer.
Began on the X11XCB implementation of DisplayServer.
Added some data to Default_WindowManager and initialized the DisplayServer in the constructor.
Rewrote the default program to test the DisplayServer/WindowManager combo.