func ExampleTo() {
	for i := range ranging.To(5) {
		fmt.Println(i)
	}
	//Output: 0
	//1
	//2
	//3
	//4
}
func TestSimpleRange(t *testing.T) {
	r := ranging.To(100)

	for i := 0; i < 100; i++ {
		v := <-r
		if i != int(v) {
			t.Errorf("Expected: %d Got: %d", i, v)
		}
	}
}