Update copyright dates

COPYING

@@ -1,4 +1,4 @@
-Copyright (c) 2016 Matteo Cypriani <mcy@lm7.fr>
+Copyright (c) 2016, 2018 Matteo Cypriani <mcy@lm7.fr>
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

src/lib.rs

@@ -1,6 +1,6 @@
 // This file is part of the NRGrip project.
 //
-// Copyright (c) 2016 Matteo Cypriani <mcy@lm7.fr>
+// Copyright (c) 2016, 2018 Matteo Cypriani <mcy@lm7.fr>
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to

src/main.rs

@@ -1,6 +1,6 @@
 // This file is part of the NRGrip project.
 //
-// Copyright (c) 2016 Matteo Cypriani <mcy@lm7.fr>
+// Copyright (c) 2016, 2018 Matteo Cypriani <mcy@lm7.fr>
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to

src/metadata/cuex.rs

@@ -1,6 +1,6 @@
 // This file is part of the NRGrip project.
 //
-// Copyright (c) 2016 Matteo Cypriani <mcy@lm7.fr>
+// Copyright (c) 2016, 2018 Matteo Cypriani <mcy@lm7.fr>
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to

src/metadata/mtyp.rs

@@ -1,6 +1,6 @@
 // This file is part of the NRGrip project.
 //
-// Copyright (c) 2016 Matteo Cypriani <mcy@lm7.fr>
+// Copyright (c) 2016, 2018 Matteo Cypriani <mcy@lm7.fr>
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to

src/metadata/sinf.rs

@@ -1,6 +1,6 @@
 // This file is part of the NRGrip project.
 //
-// Copyright (c) 2016 Matteo Cypriani <mcy@lm7.fr>
+// Copyright (c) 2016, 2018 Matteo Cypriani <mcy@lm7.fr>
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to

src/raw_audio.rs

@@ -1,6 +1,6 @@
 // This file is part of the NRGrip project.
 //
-// Copyright (c) 2016 Matteo Cypriani <mcy@lm7.fr>
+// Copyright (c) 2016, 2018 Matteo Cypriani <mcy@lm7.fr>
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to