Nav: Added NavJustNavigatedId internal info to record when we land on a given item after a navigation request, useful for various algorithms (currently looking at range selection stuff) (#787)
ImGuiWindow*NavWindow;// Nav/focused window for navigation
ImGuiIDNavId;// Nav/focused item for navigation
ImGuiIDNavActivateId,NavInputId;// ~~ IsKeyPressedMap(ImGuiKey_NavActive) ? NavId : 0, etc. (to make widget code terser)
ImGuiIDNavTabbedId;//
ImGuiIDNavJustTabbedId;// Just tabbed to this id.
ImGuiIDNavJustNavigatedId;// Just navigated to this id (result of a successfully MoveRequest)
ImRectNavScoringRectScreen;// Rectangle used for scoring, in screen space. Based of window->DC.NavRefRectRel[], modified for directional navigation scoring.