Adjust copyright & license specification to comply with REUSE 3.0

With this change we switch to using a REUSE compliant way of specifying
the copyright & license of the program. To be fully in conformance we
also add additional license specifications for the remaining files in
the project. Lastly, a new CI pipeline rule takes care of verifying
compliance on an ongoing basis.

20 files changed, 40 insertions, 320 deletions

diff --git a/src/arg_util.rs b/src/arg_util.rs
index 1c5d38f..b1dd60f 100644
--- a/src/arg_util.rs
+++ b/src/arg_util.rs
@@ -1,21 +1,7 @@
 // arg_util.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 macro_rules! count {
   ($head:ident) => { 1 };
diff --git a/src/args.rs b/src/args.rs
index 4b12ceb..3052afa 100644
--- a/src/args.rs
+++ b/src/args.rs
@@ -1,21 +1,7 @@
 // args.rs
 
-// *************************************************************************
-// * Copyright (C) 2020 The Nitrocli Developers                            *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 /// Provides access to a Nitrokey device
 #[derive(Debug, structopt::StructOpt)]
diff --git a/src/commands.rs b/src/commands.rs
index 30651c1..67d230e 100644
--- a/src/commands.rs
+++ b/src/commands.rs
@@ -1,21 +1,7 @@
 // commands.rs
 
-// *************************************************************************
-// * Copyright (C) 2018-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2018-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use std::convert::TryFrom as _;
 use std::fmt;
diff --git a/src/config.rs b/src/config.rs
index 8b12f10..caa1ef9 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,21 +1,7 @@
 // config.rs
 
-// *************************************************************************
-// * Copyright (C) 2020 The Nitrocli Developers                            *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use std::fs;
 use std::path;
diff --git a/src/main.rs b/src/main.rs
index e4ff601..baad15c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,21 +1,7 @@
 // main.rs
 
-// *************************************************************************
-// * Copyright (C) 2017-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2017-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 #![warn(
   bad_style,
diff --git a/src/pinentry.rs b/src/pinentry.rs
index 0121754..3bf67c1 100644
--- a/src/pinentry.rs
+++ b/src/pinentry.rs
@@ -1,21 +1,7 @@
 // pinentry.rs
 
-// *************************************************************************
-// * Copyright (C) 2017-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2017-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use std::borrow;
 use std::fmt;
diff --git a/src/redefine.rs b/src/redefine.rs
index 2e37b1e..dad4529 100644
--- a/src/redefine.rs
+++ b/src/redefine.rs
@@ -1,21 +1,7 @@
 // redefine.rs
 
-// *************************************************************************
-// * Copyright (C) 2019 The Nitrocli Developers                            *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 // A replacement of the standard println!() macro that requires an
 // execution context as the first argument and prints to its stdout.
diff --git a/src/tests/config.rs b/src/tests/config.rs
index c4d412f..75ec983 100644
--- a/src/tests/config.rs
+++ b/src/tests/config.rs
@@ -1,21 +1,7 @@
 // config.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;
 
diff --git a/src/tests/encrypted.rs b/src/tests/encrypted.rs
index ec0fb51..485bb6e 100644
--- a/src/tests/encrypted.rs
+++ b/src/tests/encrypted.rs
@@ -1,21 +1,7 @@
 // encrypted.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;
 
diff --git a/src/tests/hidden.rs b/src/tests/hidden.rs
index e261a72..82a4630 100644
--- a/src/tests/hidden.rs
+++ b/src/tests/hidden.rs
@@ -1,21 +1,7 @@
 // hidden.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;
 
diff --git a/src/tests/list.rs b/src/tests/list.rs
index 63aeac1..7ff88a7 100644
--- a/src/tests/list.rs
+++ b/src/tests/list.rs
@@ -1,21 +1,7 @@
 // list.rs
 
-// *************************************************************************
-// * Copyright (C) 2020 The Nitrocli Developers                            *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;
 
diff --git a/src/tests/lock.rs b/src/tests/lock.rs
index 4a32c9c..e04e8eb 100644
--- a/src/tests/lock.rs
+++ b/src/tests/lock.rs
@@ -1,21 +1,7 @@
 // lock.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;
 
diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index 298dde9..e1f93a9 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -1,21 +1,7 @@
 // mod.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use std::ffi;
 
diff --git a/src/tests/otp.rs b/src/tests/otp.rs
index 59fd319..d907f18 100644
--- a/src/tests/otp.rs
+++ b/src/tests/otp.rs
@@ -1,21 +1,7 @@
 // otp.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;
 
diff --git a/src/tests/pin.rs b/src/tests/pin.rs
index 416a7f8..551454c 100644
--- a/src/tests/pin.rs
+++ b/src/tests/pin.rs
@@ -1,21 +1,7 @@
 // pin.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use nitrokey::Authenticate;
 use nitrokey::Device;
diff --git a/src/tests/pws.rs b/src/tests/pws.rs
index d0e8907..45c4400 100644
--- a/src/tests/pws.rs
+++ b/src/tests/pws.rs
@@ -1,21 +1,7 @@
 // pws.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;
 
diff --git a/src/tests/reset.rs b/src/tests/reset.rs
index cbac676..a7b2097 100644
--- a/src/tests/reset.rs
+++ b/src/tests/reset.rs
@@ -1,21 +1,7 @@
 // reset.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use nitrokey::Authenticate;
 use nitrokey::GetPasswordSafe;
diff --git a/src/tests/run.rs b/src/tests/run.rs
index 90e3067..4d470f6 100644
--- a/src/tests/run.rs
+++ b/src/tests/run.rs
@@ -1,21 +1,7 @@
 // run.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use std::path;
 
diff --git a/src/tests/status.rs b/src/tests/status.rs
index 983afa7..0fd5b5b 100644
--- a/src/tests/status.rs
+++ b/src/tests/status.rs
@@ -1,21 +1,7 @@
 // status.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;
 
diff --git a/src/tests/unencrypted.rs b/src/tests/unencrypted.rs
index 574b53a..26c6604 100644
--- a/src/tests/unencrypted.rs
+++ b/src/tests/unencrypted.rs
@@ -1,21 +1,7 @@
 // unencrypted.rs
 
-// *************************************************************************
-// * Copyright (C) 2019-2020 The Nitrocli Developers                       *
-// *                                                                       *
-// * 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.                                   *
-// *                                                                       *
-// * This program is distributed in the hope that it will be useful,       *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-// * GNU General Public License for more details.                          *
-// *                                                                       *
-// * You should have received a copy of the GNU General Public License     *
-// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
+// Copyright (C) 2019-2020 The Nitrocli Developers
+// SPDX-License-Identifier: GPL-3.0-or-later
 
 use super::*;