Fix forgotten files

docs/source/conf.py

@@ -16,7 +16,7 @@ napoleon_use_admonition_for_references = True
 napoleon_include_special_with_doc = True
 
 project = u'NIFTy6'
-copyright = u'2013-2019, Max-Planck-Society'
+copyright = u'2013-2020, Max-Planck-Society'
 author = u'Martin Reinecke'
 
 release = nifty6.version.__version__

nifty6/library/gridder.py

 # SPDX-License-Identifier: GPL-3.0-or-later
-# Copyright(C) 2019 Max-Planck-Society
+# Copyright(C) 2019-2020 Max-Planck-Society
 # NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik.
 
 import numpy as np

test/test_operators/test_interpolated.py

-# 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) 2013-2019 Max-Planck-Society
-#
+# SPDX-License-Identifier: GPL-3.0-or-later
+# Copyright(C) 2013-2020 Max-Planck-Society
 # NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik.
 
 import numpy as np

test/test_operators/test_nft.py

 # SPDX-License-Identifier: GPL-3.0-or-later
-# Copyright(C) 2019 Max-Planck-Society
+# Copyright(C) 2019-2020 Max-Planck-Society
 # NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik.
 
 import numpy as np