Package testlog to catch logs while testing

§ Quick start

    $ go get sogvin.com/testlog@latest
	
in your code

    func TestYourthing(t *testing.T) {
	buf := testlog.Catch(t) 
	
	// do something
	
	got := buf.String()	
	exp := "some log phrase"
	if !strings.Contains(got, exp) {
		t.Error(got, " missing expected ", exp)
	}
    }