Method tick

framework/timer.h:103–109

	 */
	template <typename T = DefaultResolution>
	double tick()
	{
		auto now      = Clock::now();
		auto duration = std::chrono::duration<double, T>(now - previous_tick);
		previous_tick = now;
		return duration.count();
	}

	/**
	 * @brief Check if the timer is running