Added a new window - Temporal Graph which shows all frame IDs and the

time stamp when they came in. Shows the temporal relationship between
all frames.

re/temporalgraphwindow.h

@@ -0,0 +1,50 @@
+#ifndef TEMPORALGRAPHWINDOW_H
+#define TEMPORALGRAPHWINDOW_H
+
+#include <QDialog>
+#include "qcustomplot.h"
+#include "can_structs.h"
+
+namespace Ui {
+class TemporalGraphWindow;
+}
+
+class HexTicker : public QCPAxisTicker
+{
+    QString getTickLabel (double tick, const QLocale& locale, QChar formatChar, int precision);
+};
+
+class TemporalGraphWindow : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit TemporalGraphWindow(const QVector<CANFrame> *, QWidget *parent = nullptr);
+    ~TemporalGraphWindow();
+    void showEvent(QShowEvent*);
+
+private slots:
+    void updatedFrames(int);
+    void mousePress();
+    void mouseWheel();
+    void resetView();
+    void zoomIn();
+    void zoomOut();
+    void selectionChanged();
+
+private:
+    Ui::TemporalGraphWindow *ui;    
+    const QVector<CANFrame> *modelFrames;
+    bool useOpenGL;
+    bool followGraphEnd;
+    QCPGraph *graph;
+
+    void closeEvent(QCloseEvent *event);
+    bool eventFilter(QObject *obj, QEvent *event);
+    void readSettings();
+    void writeSettings();
+    void generateGraph();
+
+};
+
+#endif // TEMPORALGRAPHWINDOW_H