add warning notices that is not public api

src/plasmaquick/appletquickitem.h

@@ -30,6 +30,17 @@
 
 #include <plasmaquick/plasmaquick_export.h>
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the public Plasma API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 namespace Plasma {
     class Applet;
 }

src/plasmaquick/configmodel.h

@@ -26,6 +26,17 @@
 
 #include <plasmaquick/plasmaquick_export.h>
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the public Plasma API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 namespace Plasma {
     class Applet;
 }

src/plasmaquick/configview.h

@@ -25,6 +25,17 @@
 
 #include <plasmaquick/plasmaquick_export.h>
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the public Plasma API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 namespace Plasma {
     class Applet;
 }

src/plasmaquick/packageurlinterceptor.h

@@ -26,6 +26,17 @@
 
 #include <Plasma/Package>
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the public Plasma API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 class QQmlEngine;
 
 namespace PlasmaQuick

src/plasmaquick/private/appletquickitem_p.h

@@ -22,6 +22,17 @@
 
 #include <QQmlComponent>
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the public Plasma API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 namespace Plasma {
     class Applet;
 }

src/plasmaquick/private/configcategory_p.h

@@ -22,6 +22,17 @@
 
 #include <QObject>
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the public Plasma API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 namespace PlasmaQuick {
 
 //This class represents a single row item of the ConfigModel model in a QML friendly manner.

src/plasmaquick/view.h

@@ -25,6 +25,16 @@
 #include "plasma/corona.h"
 #include "plasma/containment.h"
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the public Plasma API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
 
 namespace PlasmaQuick
 {