explicit constructors

protocol/artnet/controller.h

@@ -34,7 +34,7 @@ namespace ARTNET {
 class Controller : public virtual Device
 {
 public:
-  Controller();
+  explicit Controller();
 };
 
 } // namespace ARTNET

protocol/artnet/device.h

@@ -32,7 +32,7 @@ namespace ARTNET {
 class Device
 {
 public:
-  Device();
+  explicit Device();
 };
 
 } // namespace ARTNET

protocol/artnet/node.h

@@ -33,7 +33,7 @@ namespace ARTNET {
 class Node : public virtual Device
 {
 public:
-  Node();
+  explicit Node();
 };
 
 } // namespace ARTNET

protocol/artnet/port.h

@@ -33,7 +33,7 @@ namespace ARTNET {
 class Port
 {
 public:
-  Port();
+  explicit Port();
 };
 
 } // namespace ARTNET

protocol/artnet/universe.h

@@ -31,7 +31,7 @@ namespace ARTNET {
 class universe
 {
 public:
-  universe();
+  explicit universe();
 };
 
 } // namespace ARTNET