File qx-concepts.h: Figure out how to make a concept that uses the member of pointer (arrow) operator.
Module qx-gui: This component is quite bare and for now exists solely to keep dependents of Qt GUI in a separate component so that console applications don't end up with a UI dependency when using Qx Core.
Class Qx::LoginDialog: May allow for setting default field content and getting the existing prompt.
Class Qx::TreeInputDialog: Expand the modes, options, and use cases of this dialog.