Forbid any later GNU GPL versions autousage

diff --git a/netstring.go b/netstring.go
index fd3afeb5d1005f77ce4fdf4f2c0f7fdccd7e689b..f9b75d53478c8c27ae0494d63943429db2fc23b0 100644 (file)
--- a/netstring.go
+++ b/netstring.go
@@ -4,8 +4,7 @@ Copyright (C) 2015-2019 Sergey Matveev <stargrave@stargrave.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, version 3 of the License.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of

diff --git a/netstring_test.go b/netstring_test.go
index 92d2195f7d5b7f4957ad37ce76375f1230ec2fe3..bfb303514b9f498a01c1fae0c1202aacbde7a71c 100644 (file)
--- a/netstring_test.go
+++ b/netstring_test.go
@@ -4,8 +4,7 @@ Copyright (C) 2015-2019 Sergey Matveev <stargrave@stargrave.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, version 3 of the License.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of

diff --git a/reader.go b/reader.go
index 351fc8132dc181fef76a673bc1c86782267dad2c..4b578b17bd621129796a7fbd153ea11b291f8ad5 100644 (file)
--- a/reader.go
+++ b/reader.go
@@ -4,8 +4,7 @@ Copyright (C) 2015-2019 Sergey Matveev <stargrave@stargrave.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, version 3 of the License.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of

diff --git a/writer.go b/writer.go
index 64157df3c5f53cf2847a7e1d485d0390a356d0b2..5ba9a8f3511e3e5782265edd821c404cc9f84e55 100644 (file)
--- a/writer.go
+++ b/writer.go
@@ -4,8 +4,7 @@ Copyright (C) 2015-2019 Sergey Matveev <stargrave@stargrave.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, version 3 of the License.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of