Rename SpidSignal.h -> SpidSignal.hpp and clean up class a bit

src/modules/AnalysisPowerPulsing/AnalysisPowerPulsing.cpp

 #include "AnalysisPowerPulsing.h"
 #include "objects/Cluster.hpp"
-#include "objects/SpidrSignal.h"
+#include "objects/SpidrSignal.hpp"
 
 using namespace corryvreckan;
 using namespace std;

src/modules/EventLoaderTimepix3/EventLoaderTimepix3.h

@@ -7,7 +7,7 @@
 #include <stdio.h>
 #include "core/module/Module.hpp"
 #include "objects/Pixel.hpp"
-#include "objects/SpidrSignal.h"
+#include "objects/SpidrSignal.hpp"
 
 namespace corryvreckan {
     /** @ingroup Modules

src/modules/ImproveReferenceTimestamp/ImproveReferenceTimestamp.cpp

 #include "ImproveReferenceTimestamp.h"
-#include "objects/SpidrSignal.h"
+#include "objects/SpidrSignal.hpp"
 
 using namespace corryvreckan;
 using namespace std;

src/objects/CMakeLists.txt

@@ -20,7 +20,7 @@ ROOT_GENERATE_DICTIONARY(CorryvreckanObjectsDictionary
     ${CMAKE_CURRENT_SOURCE_DIR}/GuiDisplay.h
     ${CMAKE_CURRENT_SOURCE_DIR}/KDTree.h
     ${CMAKE_CURRENT_SOURCE_DIR}/Pixel.hpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/SpidrSignal.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/SpidrSignal.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/Object.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/Track.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/MCParticle.h

src/objects/SpidrSignal.h → src/objects/SpidrSignal.hpp

@@ -7,28 +7,23 @@ namespace corryvreckan {
 
     public:
         // Constructors and destructors
-        SpidrSignal() {}
+        SpidrSignal() = delete;
         SpidrSignal(std::string type, double timestamp) : Object(timestamp), m_type(type){};
-        //    virtual ~SpidrSignal() {}
-
-        // Functions
 
         // Set properties
         void type(std::string type) { m_type = type; }
-
-        // Retrieve properties
-        std::string type() { return m_type; }
+        std::string type() const { return m_type; }
 
     protected:
         // Member variables
         std::string m_type;
 
         // ROOT I/O class definition - update version number when you change this class!
-        ClassDef(SpidrSignal, 2)
+        ClassDef(SpidrSignal, 3)
     };
 
     // Vector type declaration
-    typedef std::vector<SpidrSignal*> SpidrSignals;
+    using SpidrSignals = std::vector<SpidrSignal*>;
 } // namespace corryvreckan
 
 #endif // SPIDRSIGNAL_H