also add Enable()

flags.go

@@ -151,6 +151,15 @@ func (f *LogFlag) Disabled() bool {
 	return ! f.b
 }
 
+// just the opposite of Disabled()
+// both are here just for code readability
+func (f *LogFlag) Enabled() bool {
+	if !f.Ok() {
+		return false
+	}
+	return f.b
+}
+
 /*
 func (f *LogFlag) Set(b bool) {
 	if ! f.Ok() {}