fixed various caching issues when rapidly changing values

app/widget/timeruler/timeruler.cpp

@@ -92,7 +92,7 @@ void TimeRuler::SetTimebase(const rational &r)
   update();
 }
 
-const int64_t &TimeRuler::Time()
+const int64_t &TimeRuler::GetTime()
 {
   return time_;
 }

app/widget/timeruler/timeruler.h

@@ -42,7 +42,7 @@ public:
 
   void SetCenteredText(bool c);
 
-  const int64_t& Time();
+  const int64_t& GetTime();
 
 public slots:
   void SetTime(const int64_t &r);