Minor refactor

src/util/timeutil.cpp

@@ -1,5 +1,16 @@
 #include "timeutil.h"
 
+using std::chrono::high_resolution_clock;
+using std::chrono::duration_cast;
+using std::chrono::microseconds;
+
+timeutil::Timer::Timer() {
+    start = high_resolution_clock::now();
+}
+int64_t timeutil::Timer::stop() {
+    return duration_cast<microseconds>(high_resolution_clock::now()-start).count();
+}
+
 float timeutil::time_value(float hour, float minute, float second) {
     return (hour + (minute + second / 60.0f) / 60.0f) / 24.0f;
 }