Method setClock

include/dsp/midi.hpp:183–196

	}

	void setClock(bool clk) {
		if (this->clk == clk)
			return;
		this->clk = clk;
		if (clk) {
			// Timing clock
			midi::Message m;
			m.setSize(1);
			m.setStatus(0xf);
			m.setChannel(0x8);
			m.setFrame(frame);
			onMessage(m);
		}
	}

	void setStart(bool start) {
		if (this->start == start)