Updating Ghoul repository

Updating SGCT repository
Removing compiler warnings

include/openspace/documentation/verifier.h

@@ -44,6 +44,8 @@ namespace documentation {
  * description of the Verifier subclass and what it tests for.
  */
 struct Verifier {
+    virtual ~Verifier() = default;
+
     /**
      * This method tests whether the \p key contained in the \p dictionary adheres to
      * whatever the concrete Verifer needs to test. The actual testing depends on the

include/openspace/interaction/interactionmode.h

@@ -108,11 +108,10 @@ namespace interaction {
 
 
 
-class InteractionMode
-{
+class InteractionMode {
 public:
     InteractionMode();
-    ~InteractionMode();
+    virtual ~InteractionMode();
 
     // Mutators
     virtual void setFocusNode(SceneGraphNode* focusNode);

include/openspace/network/parallelconnection.h

@@ -120,7 +120,7 @@ class ParallelConnection {
         */
     static scripting::LuaLibrary luaLibrary();
     Status status();
-    size_t nConnections();
+    int nConnections();
     std::shared_ptr<ghoul::Event<>> connectionEvent();
 
             

include/openspace/rendering/volumeraycaster.h

@@ -38,8 +38,8 @@ namespace ghoul {
 
 namespace openspace {
 
-class RenderData;
-class RaycastData;
+struct RenderData;
+struct RaycastData;
 
 class VolumeRaycaster {
 public: