diff --git a/config/src/config.hh.in b/config/src/config.hh.in
index b864eb0aaf25ac8b75030c3dbe9c0db27002392e..36c42a655c7ba07c1e4cc7cc211b24e563e363b7 100644
--- a/config/src/config.hh.in
+++ b/config/src/config.hh.in
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/doc/geometry.rst b/core/doc/geometry.rst
index 1ac82fac9c1ecc650be29cd7a099f122ed7a6a5a..69d10564ed5015c5dbaf109eb2e8d6c01513be45 100644
--- a/core/doc/geometry.rst
+++ b/core/doc/geometry.rst
@@ -1,4 +1,4 @@
-..  Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+..  Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 ..                           Biozentrum - University of Basel
 ..  
 ..  Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/doc/graph_minimizer.rst b/core/doc/graph_minimizer.rst
index a38bca5895963caf439339bf5e57af6459d10847..1be1aa1375b754577c2c9a63ad201b9dee219b51 100644
--- a/core/doc/graph_minimizer.rst
+++ b/core/doc/graph_minimizer.rst
@@ -1,4 +1,4 @@
-..  Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+..  Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 ..                           Biozentrum - University of Basel
 ..  
 ..  Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/doc/helper.rst b/core/doc/helper.rst
index 6684d1247ae7c8a53785187b4dd24a4b38737ac0..6fcee377975a7f4ffb674bf8e0c73104de151a50 100644
--- a/core/doc/helper.rst
+++ b/core/doc/helper.rst
@@ -1,4 +1,4 @@
-..  Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+..  Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 ..                           Biozentrum - University of Basel
 ..  
 ..  Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/doc/index.rst b/core/doc/index.rst
index 91b0d9c39c77212b3747e804b1a12191f422a213..6d0e8f25a432e159e8cb0406121e46e998c31527 100644
--- a/core/doc/index.rst
+++ b/core/doc/index.rst
@@ -1,4 +1,4 @@
-..  Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+..  Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 ..                           Biozentrum - University of Basel
 ..  
 ..  Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/doc/pm3argparse.rst b/core/doc/pm3argparse.rst
index f6a048252ec82ce7dabbb48da87a242e26d82aa4..fa27dcb7fc64336288b5593984399166bf5e0511 100644
--- a/core/doc/pm3argparse.rst
+++ b/core/doc/pm3argparse.rst
@@ -1,4 +1,4 @@
-..  Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+..  Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 ..                           Biozentrum - University of Basel
 ..  
 ..  Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/doc/runtime_profiling.rst b/core/doc/runtime_profiling.rst
index 44bd8621a4ad7a5b77b185f5a9be069afbc9440c..3ce033c71678a21601a69c3a687940e1a736d473 100644
--- a/core/doc/runtime_profiling.rst
+++ b/core/doc/runtime_profiling.rst
@@ -1,4 +1,4 @@
-..  Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+..  Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 ..                           Biozentrum - University of Basel
 ..  
 ..  Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/doc/setcompoundschemlib.rst b/core/doc/setcompoundschemlib.rst
index 2c6e660ffb8e1cf6d4d3df93a7f16fda04340724..f664e4b31aee0ae9885debefc5225433002b0497 100644
--- a/core/doc/setcompoundschemlib.rst
+++ b/core/doc/setcompoundschemlib.rst
@@ -1,4 +1,4 @@
-..  Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+..  Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 ..                           Biozentrum - University of Basel
 ..  
 ..  Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/init/__init__.py.in b/core/init/__init__.py.in
index a4e38d44e1d6cbad893b13b0fb5252bdb2f7e78a..1c6de949bd971057606cac250ae69feb298f8a5e 100644
--- a/core/init/__init__.py.in
+++ b/core/init/__init__.py.in
@@ -1,4 +1,4 @@
-# Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+# Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 #                          Biozentrum - University of Basel
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/pymod/__init__.py b/core/pymod/__init__.py
index 0c0066f597836afb33879fff16e2dbd264b7c26d..7714828593b66413ce21a51743e1019282e97082 100644
--- a/core/pymod/__init__.py
+++ b/core/pymod/__init__.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+# Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 #                          Biozentrum - University of Basel
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/pymod/export_geom.cc b/core/pymod/export_geom.cc
index b26d5dba8f0bea9980182ac7804b461994ba9c5c..c60ea49268faa22aab5cd8c4ce4ea4d3f088e5be 100644
--- a/core/pymod/export_geom.cc
+++ b/core/pymod/export_geom.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/pymod/export_graph_minimizer.cc b/core/pymod/export_graph_minimizer.cc
index a652c9a9ca37786161badd2e0acd1f0e63465414..5974823a5e985fa301732697e8da4216f438a88b 100644
--- a/core/pymod/export_graph_minimizer.cc
+++ b/core/pymod/export_graph_minimizer.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/pymod/export_runtime_profiling.cc b/core/pymod/export_runtime_profiling.cc
index aa61d4881968cafed2fdbb676567c72e29cd831e..aef7a945007523d00029a77a46b6265c6468ae18 100644
--- a/core/pymod/export_runtime_profiling.cc
+++ b/core/pymod/export_runtime_profiling.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/pymod/helper.py b/core/pymod/helper.py
index 3d6d6a09b58b8428804bf6c23f0017d620431e7f..d7be189c0111c4c70efd4b3e4373f9cee9c5047c 100644
--- a/core/pymod/helper.py
+++ b/core/pymod/helper.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+# Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 #                          Biozentrum - University of Basel
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/pymod/pm3argparse.py b/core/pymod/pm3argparse.py
index f1b625020823622867207bda5954a1ddad53b0a8..18c8e8be318c701b854425a645fd3bb9dbed5655 100644
--- a/core/pymod/pm3argparse.py
+++ b/core/pymod/pm3argparse.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+# Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 #                          Biozentrum - University of Basel
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/pymod/wrap_core.cc b/core/pymod/wrap_core.cc
index 8891cf7a2b2d814d96a36ce1cdce4fa0a7c852e4..fb9ed740fe928fca0d38d923cce64526d865b51d 100644
--- a/core/pymod/wrap_core.cc
+++ b/core/pymod/wrap_core.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/check_io.hh b/core/src/check_io.hh
index e4013eca3009ec9a26f0f77d912644c13dd954fc..18ae81ff6c461e900053605329fcf0f12b39357f 100644
--- a/core/src/check_io.hh
+++ b/core/src/check_io.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/cluster.cc b/core/src/cluster.cc
index d9bbd65e15696fe12875208f7d4d2c078956d786..ae9c85402facffda632adb18146c3e59688428cc 100644
--- a/core/src/cluster.cc
+++ b/core/src/cluster.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/cluster.hh b/core/src/cluster.hh
index d9d475d35e921a5dbee3af30e9af51bb4394f00f..e287a6a8f4b24827e3c0c7fc655bc0860dc07cdd 100644
--- a/core/src/cluster.hh
+++ b/core/src/cluster.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/dynamic_spatial_organizer.hh b/core/src/dynamic_spatial_organizer.hh
index 9565e49e3f1471e3f23d95bd9d74d5da6f988cf0..3373662baafb9bf0280e22691b9cca2cc0801814 100644
--- a/core/src/dynamic_spatial_organizer.hh
+++ b/core/src/dynamic_spatial_organizer.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/eigen_types.hh b/core/src/eigen_types.hh
index 89c90f06a002ddccf925389b887ecca0804b9879..34cd0bebc0c1424ed00698637e6414cc567524ea 100644
--- a/core/src/eigen_types.hh
+++ b/core/src/eigen_types.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/enumerator.hh b/core/src/enumerator.hh
index 1eb1790e1e8124611c948c38757e2677b2ce9a5f..68adefccf0108844caf9b244cb088479dc0fa296 100644
--- a/core/src/enumerator.hh
+++ b/core/src/enumerator.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/export_helper.hh b/core/src/export_helper.hh
index 9f86b080d6a26ed49e00f5024b41b2aa2a72c288..2cf16769111c40a90c98c42c3570ca03088a8f13 100644
--- a/core/src/export_helper.hh
+++ b/core/src/export_helper.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/geom_base.cc b/core/src/geom_base.cc
index de84ef134953f7de798b4c678295cd2396479b23..da75566427faba3ec90ce7ef62111843069cbbeb 100644
--- a/core/src/geom_base.cc
+++ b/core/src/geom_base.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/geom_base.hh b/core/src/geom_base.hh
index 8307a7192f797037943a9fa9d05fab5c85ba3911..79348ec9345bc1cba2ec06614bf80222e4877e11 100644
--- a/core/src/geom_base.hh
+++ b/core/src/geom_base.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/geom_stems.cc b/core/src/geom_stems.cc
index 2194e1a775ba7615297d9409e2320a2cb2e5544c..2491d1c8a384a31032c006ef39dd6030869f521e 100644
--- a/core/src/geom_stems.cc
+++ b/core/src/geom_stems.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/geom_stems.hh b/core/src/geom_stems.hh
index fc0128bf8d35f0a0b4cf4c318710870e0d4871b7..042b2c1aca9572461f065c867658a278eea68fbf 100644
--- a/core/src/geom_stems.hh
+++ b/core/src/geom_stems.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/graph.cc b/core/src/graph.cc
index 90082ccaaec1a7d08db9674088b1ef596b3d6866..4326986e9a3fd038d923f0bbcc3280e6172ba2fd 100644
--- a/core/src/graph.cc
+++ b/core/src/graph.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/graph.hh b/core/src/graph.hh
index 7187be85c776c451610ccab47aedbc916fbe168c..0949a33e6c094674d2b7669b387dc6d6cf7970f6 100644
--- a/core/src/graph.hh
+++ b/core/src/graph.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/graph_minimizer.cc b/core/src/graph_minimizer.cc
index 0f9bd8fd05d25610376ffa6087b1418ad25fd0ee..1e17d85d29c4b1042ea573fa3d28041d4a89366d 100644
--- a/core/src/graph_minimizer.cc
+++ b/core/src/graph_minimizer.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/graph_minimizer.hh b/core/src/graph_minimizer.hh
index 28e9df7b9324a7d81845d39e321cb843b99f30a6..ed118269ff47faa9d3e026f18e2081d699f6b290 100644
--- a/core/src/graph_minimizer.hh
+++ b/core/src/graph_minimizer.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/message.hh b/core/src/message.hh
index c652f2bab02703d4edc0635aec78856b54b4bbad..2cc46cfd5cad58668a81b49c289c372aae4b7948 100644
--- a/core/src/message.hh
+++ b/core/src/message.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/portable_binary_data_sink.hh b/core/src/portable_binary_data_sink.hh
index c3c8c9e93e1013747f0981862882a98ded0124e2..6e930e71018b33fb30f19ece624f035f413284dd 100644
--- a/core/src/portable_binary_data_sink.hh
+++ b/core/src/portable_binary_data_sink.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/portable_binary_data_source.hh b/core/src/portable_binary_data_source.hh
index 00d80a50d5c1ea69ce48f68fab080c82d0124e57..691919d49ebf97be92fb4c68bb7c8588cca1aa1a 100644
--- a/core/src/portable_binary_data_source.hh
+++ b/core/src/portable_binary_data_source.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/portable_binary_serializer.hh b/core/src/portable_binary_serializer.hh
index 4a5b52efab05161da16c1bf30c66828e81eb4f5a..769bc7812e1e2deafa737471dcd667d647f3deef 100644
--- a/core/src/portable_binary_serializer.hh
+++ b/core/src/portable_binary_serializer.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/runtime_profiling.hh b/core/src/runtime_profiling.hh
index 343666befacf48c27eb5b1b7f27e300aea93864c..e578ea5e53c1400013ff4bd2f21481b12e9196da 100644
--- a/core/src/runtime_profiling.hh
+++ b/core/src/runtime_profiling.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/superpose.cc b/core/src/superpose.cc
index 9729d23fe60e98a07bab309381c84ac0dc3b9051..e03716bd41650488302d2f0151fed29409347850 100644
--- a/core/src/superpose.cc
+++ b/core/src/superpose.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/superpose.hh b/core/src/superpose.hh
index 46f769d5e74a31f0ca668c6ea3f0bd016092ebcc..3ba7df2a76ddb5b9c6283c6a4b95a98515b707c3 100644
--- a/core/src/superpose.hh
+++ b/core/src/superpose.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/tetrahedral_polytope.cc b/core/src/tetrahedral_polytope.cc
index 9c09f4ed02ff0089abdb0ea69948edc05116126b..dd93f838a97021cd22adbe0b33c9bb9ae8d87ce3 100644
--- a/core/src/tetrahedral_polytope.cc
+++ b/core/src/tetrahedral_polytope.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/tetrahedral_polytope.hh b/core/src/tetrahedral_polytope.hh
index 744f05ec39eb6383e48c932ce486b00d1a4e5471..ead330280b55067b429d7610307852138b4045ef 100644
--- a/core/src/tetrahedral_polytope.hh
+++ b/core/src/tetrahedral_polytope.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/tree.cc b/core/src/tree.cc
index 8e32afb18e0f80d14e1337b544015efe29a7b464..e358b52c4e1233e0f1ef1dc56e2537fca72703f9 100644
--- a/core/src/tree.cc
+++ b/core/src/tree.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/src/tree.hh b/core/src/tree.hh
index dd45dc327e907021c6176a14e8fc09bced8fe2b2..90c10960af091a1d88c1d1ce14c1ea0cdbca8fa8 100644
--- a/core/src/tree.hh
+++ b/core/src/tree.hh
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/tests/test_check_io.cc b/core/tests/test_check_io.cc
index 692e29f2e525bc8527764c402a501625f07c2b0e..91acfe0bb25700cf07ca391d963d2b95ec3fc32b 100644
--- a/core/tests/test_check_io.cc
+++ b/core/tests/test_check_io.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/tests/test_graph_minimizer.cc b/core/tests/test_graph_minimizer.cc
index 29e60b74cf456909c43af37d663a92dfa1f2850b..07423e42da4a5f1f3ab2e41f3b9ad575f5a2bbbe 100644
--- a/core/tests/test_graph_minimizer.cc
+++ b/core/tests/test_graph_minimizer.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/tests/test_helper.py b/core/tests/test_helper.py
index f18cbbf50534e313d240f3954b62df46d566dbda..c497a6a4330cda5c22fccf0cf1c01854d5f26122 100644
--- a/core/tests/test_helper.py
+++ b/core/tests/test_helper.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+# Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 #                          Biozentrum - University of Basel
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/tests/test_pm3argparse.py b/core/tests/test_pm3argparse.py
index 880f75c6467d52566cbd27394c40b91add275250..d5c195987db76ce960be7370fc8d236f081fea6e 100644
--- a/core/tests/test_pm3argparse.py
+++ b/core/tests/test_pm3argparse.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+# Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 #                          Biozentrum - University of Basel
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/tests/test_portable_binary.cc b/core/tests/test_portable_binary.cc
index 8fc5f49715d9b53fed9ea87be02d495276325311..ebdf72ca2890eb936ded9ffec7b2c42ac69d78ce 100644
--- a/core/tests/test_portable_binary.cc
+++ b/core/tests/test_portable_binary.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/tests/test_setcompoundschemlib.py b/core/tests/test_setcompoundschemlib.py
index 2da5ead8d841146fb9bcdc57f4dfc5652dde157f..1efe735b1ab4c27e8a0d2962907c60707ebae4ed 100644
--- a/core/tests/test_setcompoundschemlib.py
+++ b/core/tests/test_setcompoundschemlib.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+# Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 #                          Biozentrum - University of Basel
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/core/tests/tests.cc b/core/tests/tests.cc
index cb1a39d42c8745d604c876adcf025ac7036dd9ea..be44a88cf2ef47bdcfb77e2406324452953ff6fe 100644
--- a/core/tests/tests.cc
+++ b/core/tests/tests.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2018, SIB - Swiss Institute of Bioinformatics and 
+// Copyright (c) 2013-2020, SIB - Swiss Institute of Bioinformatics and
 //                          Biozentrum - University of Basel
 // 
 // Licensed under the Apache License, Version 2.0 (the "License");