Update copyright and year

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

advotracker_client/examples/messages_test/sender/mod.rs

@@ -1,3 +1,10 @@
+/*
+ * OrbTK - The Orbital Widget Toolkit
+ *
+ * Copyright 2021 Ralf Zerres <ralf.zerres@networkx.de>
+ * SPDX-License-Identifier: (0BSD or MIT)
+ */
+
 /// The sender state
 pub mod sender_state;
 

advotracker_client/examples/messages_test/sender/sender_state.rs

@@ -1,8 +1,8 @@
+// SPDX-License-Identifier: (0BSD or MIT)
 /*
  * OrbTK - The Orbital Widget Toolkit
  *
  * Copyright 2021 Ralf Zerres <ralf.zerres@networkx.de>
- * SPDX-License-Identifier: (0BSD or MIT)
  */
 
 use orbtk::prelude::*;

advotracker_client/examples/messages_test/sender/sender_view.rs

@@ -1,8 +1,8 @@
+// SPDX-License-Identifier: (0BSD or MIT)
 /*
  * OrbTK - The Orbital Widget Toolkit
  *
  * Copyright 2021 Ralf Zerres <ralf.zerres@networkx.de>
- * SPDX-License-Identifier: (0BSD or MIT)
  */
 
 use orbtk::prelude::*;