diff --git a/capinfo/loader.go b/capinfo/loader.go
index a1ddaab..45c32c8 100644
--- a/capinfo/loader.go
+++ b/capinfo/loader.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/cli/all.go b/cli/all.go
index 50e356f..affe931 100644
--- a/cli/all.go
+++ b/cli/all.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 //
diff --git a/cli/flags.go b/cli/flags.go
index ed3d372..762bb28 100644
--- a/cli/flags.go
+++ b/cli/flags.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 //
diff --git a/cli/flags_windows.go b/cli/flags_windows.go
index f60221b..a87d736 100644
--- a/cli/flags_windows.go
+++ b/cli/flags_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/cli/tristate.go b/cli/tristate.go
index a4ee789..285b2bc 100644
--- a/cli/tristate.go
+++ b/cli/tristate.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 //
diff --git a/cmd/termshark/termshark.go b/cmd/termshark/termshark.go
index eb2092d..ecfdac1 100644
--- a/cmd/termshark/termshark.go
+++ b/cmd/termshark/termshark.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/confwatcher.go b/confwatcher.go
index 738e287..cc071b2 100644
--- a/confwatcher.go
+++ b/confwatcher.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/convs/loader.go b/convs/loader.go
index a567b50..8fcd865 100644
--- a/convs/loader.go
+++ b/convs/loader.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/convs/types.go b/convs/types.go
index 5878c7a..8420627 100644
--- a/convs/types.go
+++ b/convs/types.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/fields.go b/fields.go
index 7d7d2f8..01c93d0 100644
--- a/fields.go
+++ b/fields.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/fields_test.go b/fields_test.go
index a2195d4..97c3294 100644
--- a/fields_test.go
+++ b/fields_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
 package termshark
diff --git a/format/hexdump.go b/format/hexdump.go
index d123bd0..1051402 100644
--- a/format/hexdump.go
+++ b/format/hexdump.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/format/hexdump_test.go b/format/hexdump_test.go
index 3dc378c..2008969 100644
--- a/format/hexdump_test.go
+++ b/format/hexdump_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/format/printable.go b/format/printable.go
index 5b71a77..fa4e092 100644
--- a/format/printable.go
+++ b/format/printable.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/noroot.go b/noroot.go
index 6275163..bc4c5e9 100644
--- a/noroot.go
+++ b/noroot.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pcap/cmds.go b/pcap/cmds.go
index c469200..17653c3 100644
--- a/pcap/cmds.go
+++ b/pcap/cmds.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pcap/cmds_unix.go b/pcap/cmds_unix.go
index 23299dc..8a50f66 100644
--- a/pcap/cmds_unix.go
+++ b/pcap/cmds_unix.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pcap/cmds_windows.go b/pcap/cmds_windows.go
index a499cd2..0e9f5ee 100644
--- a/pcap/cmds_windows.go
+++ b/pcap/cmds_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pcap/handlers.go b/pcap/handlers.go
index c318666..e113dc5 100644
--- a/pcap/handlers.go
+++ b/pcap/handlers.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pcap/loader.go b/pcap/loader.go
index f30ec0f..7ce1060 100644
--- a/pcap/loader.go
+++ b/pcap/loader.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pcap/loader_test.go b/pcap/loader_test.go
index 65f1abd..cdacafe 100644
--- a/pcap/loader_test.go
+++ b/pcap/loader_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
 package pcap
diff --git a/pcap/loader_tshark_test.go b/pcap/loader_tshark_test.go
index 83be68b..a6385eb 100644
--- a/pcap/loader_tshark_test.go
+++ b/pcap/loader_tshark_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
 // +build tshark
diff --git a/pcap/pdml.go b/pcap/pdml.go
index b926ca0..775dee6 100644
--- a/pcap/pdml.go
+++ b/pcap/pdml.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pcap/source.go b/pcap/source.go
index d9be1d7..473344e 100644
--- a/pcap/source.go
+++ b/pcap/source.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pdmltree/pdmltree.go b/pdmltree/pdmltree.go
index 9c31776..b24212e 100644
--- a/pdmltree/pdmltree.go
+++ b/pdmltree/pdmltree.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/pdmltree/pdmltree_test.go b/pdmltree/pdmltree_test.go
index e2f3dea..cc6c5b9 100644
--- a/pdmltree/pdmltree_test.go
+++ b/pdmltree/pdmltree_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
 package pdmltree
diff --git a/psmlmodel/model.go b/psmlmodel/model.go
index 33e6dc2..66514b8 100644
--- a/psmlmodel/model.go
+++ b/psmlmodel/model.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/streams/follow.peg b/streams/follow.peg
index 4854306..352ecb3 100644
--- a/streams/follow.peg
+++ b/streams/follow.peg
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 //
diff --git a/streams/follow_test.go b/streams/follow_test.go
index 7fe126e..b79f81d 100644
--- a/streams/follow_test.go
+++ b/streams/follow_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/streams/loader.go b/streams/loader.go
index 3b9fbec..0b8457b 100644
--- a/streams/loader.go
+++ b/streams/loader.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/streams/loader_test.go b/streams/loader_test.go
index 61a88c2..f2ee8ad 100644
--- a/streams/loader_test.go
+++ b/streams/loader_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
 package streams
diff --git a/streams/parse.go b/streams/parse.go
index 3214fc1..2e2488d 100644
--- a/streams/parse.go
+++ b/streams/parse.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/dumpcapext.go b/system/dumpcapext.go
index 3a70a19..74f0300 100644
--- a/system/dumpcapext.go
+++ b/system/dumpcapext.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/dumpcapext_arm64.go b/system/dumpcapext_arm64.go
index d114094..fec0d3b 100644
--- a/system/dumpcapext_arm64.go
+++ b/system/dumpcapext_arm64.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/dumpcapext_windows.go b/system/dumpcapext_windows.go
index 09a2e5b..b299a28 100644
--- a/system/dumpcapext_windows.go
+++ b/system/dumpcapext_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/errors.go b/system/errors.go
index 78a7156..7928cd4 100644
--- a/system/errors.go
+++ b/system/errors.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/extcmds.go b/system/extcmds.go
index b84d62c..6f59bd7 100644
--- a/system/extcmds.go
+++ b/system/extcmds.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/extcmds_android.go b/system/extcmds_android.go
index 645c288..9f17cf8 100644
--- a/system/extcmds_android.go
+++ b/system/extcmds_android.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/extcmds_darwin.go b/system/extcmds_darwin.go
index 9374016..5d88386 100644
--- a/system/extcmds_darwin.go
+++ b/system/extcmds_darwin.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/extcmds_windows.go b/system/extcmds_windows.go
index e156fd8..2d0111f 100644
--- a/system/extcmds_windows.go
+++ b/system/extcmds_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/fd.go b/system/fd.go
index 58cc20c..d79f350 100644
--- a/system/fd.go
+++ b/system/fd.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/fd_windows.go b/system/fd_windows.go
index da6cfc1..d57f244 100644
--- a/system/fd_windows.go
+++ b/system/fd_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/fdinfo.go b/system/fdinfo.go
index 4991315..3350cd0 100644
--- a/system/fdinfo.go
+++ b/system/fdinfo.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/have_fdinfo.go b/system/have_fdinfo.go
index e4f79e4..f61ecf2 100644
--- a/system/have_fdinfo.go
+++ b/system/have_fdinfo.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/have_fdinfo_linux.go b/system/have_fdinfo_linux.go
index ffbc31b..0024f58 100644
--- a/system/have_fdinfo_linux.go
+++ b/system/have_fdinfo_linux.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/picker.go b/system/picker.go
index a1f738b..cf4a179 100644
--- a/system/picker.go
+++ b/system/picker.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/picker_android.go b/system/picker_android.go
index ee7fc66..1ffb4e9 100644
--- a/system/picker_android.go
+++ b/system/picker_android.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/system/signals.go b/system/signals.go
index eef098e..ec25f90 100644
--- a/system/signals.go
+++ b/system/signals.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 //
diff --git a/system/signals_windows.go b/system/signals_windows.go
index 9177d1c..c64a4f9 100644
--- a/system/signals_windows.go
+++ b/system/signals_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/tailfile.go b/tailfile.go
index 383c26b..a78ba4c 100644
--- a/tailfile.go
+++ b/tailfile.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/tailfile_windows.go b/tailfile_windows.go
index fbd6564..e3e54e4 100644
--- a/tailfile_windows.go
+++ b/tailfile_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/theme/modeswap/modeswap.go b/theme/modeswap/modeswap.go
index ecbdf30..6bd4f31 100644
--- a/theme/modeswap/modeswap.go
+++ b/theme/modeswap/modeswap.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/theme/utils.go b/theme/utils.go
index 30575c0..aa5ba7f 100644
--- a/theme/utils.go
+++ b/theme/utils.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/tty/tty.go b/tty/tty.go
index 76df578..7263216 100644
--- a/tty/tty.go
+++ b/tty/tty.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 //
diff --git a/tty/tty_windows.go b/tty/tty_windows.go
index f7308ba..2f73c04 100644
--- a/tty/tty_windows.go
+++ b/tty/tty_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/capinfoui.go b/ui/capinfoui.go
index 04ee911..7020944 100644
--- a/ui/capinfoui.go
+++ b/ui/capinfoui.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/convscallbacks.go b/ui/convscallbacks.go
index f498386..9c08d8c 100644
--- a/ui/convscallbacks.go
+++ b/ui/convscallbacks.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/convsui.go b/ui/convsui.go
index 6abc35b..37a4627 100644
--- a/ui/convsui.go
+++ b/ui/convsui.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/convsui_test.go b/ui/convsui_test.go
index c159dcc..6febdd5 100644
--- a/ui/convsui_test.go
+++ b/ui/convsui_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/darkmode.go b/ui/darkmode.go
index 2b4e556..05ec816 100644
--- a/ui/darkmode.go
+++ b/ui/darkmode.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/dialog.go b/ui/dialog.go
index 246e9aa..02aac77 100644
--- a/ui/dialog.go
+++ b/ui/dialog.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/filterconvs.go b/ui/filterconvs.go
index 9ff7841..f264237 100644
--- a/ui/filterconvs.go
+++ b/ui/filterconvs.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/lastline.go b/ui/lastline.go
index 89b6f69..a38c6fc 100644
--- a/ui/lastline.go
+++ b/ui/lastline.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/logsui.go b/ui/logsui.go
index b122e70..b3b3f46 100644
--- a/ui/logsui.go
+++ b/ui/logsui.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/logsui_windows.go b/ui/logsui_windows.go
index 759a416..82fb98a 100644
--- a/ui/logsui_windows.go
+++ b/ui/logsui_windows.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/menu.go b/ui/menu.go
index af50108..0290e26 100644
--- a/ui/menu.go
+++ b/ui/menu.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/menuutil/menu.go b/ui/menuutil/menu.go
index 8a0274c..ec4a785 100644
--- a/ui/menuutil/menu.go
+++ b/ui/menuutil/menu.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/messages.go b/ui/messages.go
index 592dc4d..b00b83a 100644
--- a/ui/messages.go
+++ b/ui/messages.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/palette.go b/ui/palette.go
index e9d6ca4..d88dc5a 100644
--- a/ui/palette.go
+++ b/ui/palette.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/streamui.go b/ui/streamui.go
index 50ad3f0..db7765e 100644
--- a/ui/streamui.go
+++ b/ui/streamui.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/tableutil/tableutil.go b/ui/tableutil/tableutil.go
index 3e02048..6cbd5c4 100644
--- a/ui/tableutil/tableutil.go
+++ b/ui/tableutil/tableutil.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/ui/ui.go b/ui/ui.go
index c308d02..8e5f07a 100644
--- a/ui/ui.go
+++ b/ui/ui.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/utils.go b/utils.go
index 766cc71..4eb1abe 100644
--- a/utils.go
+++ b/utils.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/utils_test.go b/utils_test.go
index 533fd77..0337942 100644
--- a/utils_test.go
+++ b/utils_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/version.go b/version.go
index 6a1d76b..e96df26 100644
--- a/version.go
+++ b/version.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/appkeys/appkeys.go b/widgets/appkeys/appkeys.go
index cca7dc6..8c43125 100644
--- a/widgets/appkeys/appkeys.go
+++ b/widgets/appkeys/appkeys.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/copymodetable/copymodetable.go b/widgets/copymodetable/copymodetable.go
index f717ea4..407d284 100644
--- a/widgets/copymodetable/copymodetable.go
+++ b/widgets/copymodetable/copymodetable.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/copymodetree/copymodetree.go b/widgets/copymodetree/copymodetree.go
index 1a57faf..c39ace2 100644
--- a/widgets/copymodetree/copymodetree.go
+++ b/widgets/copymodetree/copymodetree.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/enableselected/enableselected.go b/widgets/enableselected/enableselected.go
index 8d48d62..dd9cc2f 100644
--- a/widgets/enableselected/enableselected.go
+++ b/widgets/enableselected/enableselected.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/expander/expander.go b/widgets/expander/expander.go
index d87a8ff..00baa1c 100644
--- a/widgets/expander/expander.go
+++ b/widgets/expander/expander.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/filter/filter.go b/widgets/filter/filter.go
index 1ef7332..225feef 100644
--- a/widgets/filter/filter.go
+++ b/widgets/filter/filter.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/framefocus/framefocus.go b/widgets/framefocus/framefocus.go
index 1f2687e..018a190 100644
--- a/widgets/framefocus/framefocus.go
+++ b/widgets/framefocus/framefocus.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/hexdumper/hexdumper.go b/widgets/hexdumper/hexdumper.go
index d5815d4..875ae83 100644
--- a/widgets/hexdumper/hexdumper.go
+++ b/widgets/hexdumper/hexdumper.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/hexdumper/hexdumper_test.go b/widgets/hexdumper/hexdumper_test.go
index e91893a..8398eaa 100644
--- a/widgets/hexdumper/hexdumper_test.go
+++ b/widgets/hexdumper/hexdumper_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
 package hexdumper
diff --git a/widgets/hexdumper2/hexdumper2.go b/widgets/hexdumper2/hexdumper2.go
index 6bfb6c2..3c816b5 100644
--- a/widgets/hexdumper2/hexdumper2.go
+++ b/widgets/hexdumper2/hexdumper2.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/ifwidget/ifwidget.go b/widgets/ifwidget/ifwidget.go
index 63198bb..74e8854 100644
--- a/widgets/ifwidget/ifwidget.go
+++ b/widgets/ifwidget/ifwidget.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/keepselected/keepselected.go b/widgets/keepselected/keepselected.go
index 28c7ef6..9e8599e 100644
--- a/widgets/keepselected/keepselected.go
+++ b/widgets/keepselected/keepselected.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/logviewer/logviewer.go b/widgets/logviewer/logviewer.go
index b46e2d1..919163a 100644
--- a/widgets/logviewer/logviewer.go
+++ b/widgets/logviewer/logviewer.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/mapkeys/mapkeys.go b/widgets/mapkeys/mapkeys.go
index f147829..2e3da7b 100644
--- a/widgets/mapkeys/mapkeys.go
+++ b/widgets/mapkeys/mapkeys.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/minibuffer/minibuffer.go b/widgets/minibuffer/minibuffer.go
index 02bb60b..42d21e5 100644
--- a/widgets/minibuffer/minibuffer.go
+++ b/widgets/minibuffer/minibuffer.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/regexstyle/regexstyle.go b/widgets/regexstyle/regexstyle.go
index 376c538..6689144 100644
--- a/widgets/regexstyle/regexstyle.go
+++ b/widgets/regexstyle/regexstyle.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/renderfocused/renderfocused.go b/widgets/renderfocused/renderfocused.go
index 5333fe7..ab86eec 100644
--- a/widgets/renderfocused/renderfocused.go
+++ b/widgets/renderfocused/renderfocused.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/resizable/resizable.go b/widgets/resizable/resizable.go
index 7fa34f7..16aa7a2 100644
--- a/widgets/resizable/resizable.go
+++ b/widgets/resizable/resizable.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/resizable/resizable_test.go b/widgets/resizable/resizable_test.go
index 9a76e7f..2879d5a 100644
--- a/widgets/resizable/resizable_test.go
+++ b/widgets/resizable/resizable_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
 package resizable
diff --git a/widgets/rossshark/rossshark.go b/widgets/rossshark/rossshark.go
index acc547c..982fea4 100644
--- a/widgets/rossshark/rossshark.go
+++ b/widgets/rossshark/rossshark.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/scrollabletable/scrollabletable.go b/widgets/scrollabletable/scrollabletable.go
index 4b12102..e44fb30 100644
--- a/widgets/scrollabletable/scrollabletable.go
+++ b/widgets/scrollabletable/scrollabletable.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/scrollabletext/scrollabletext.go b/widgets/scrollabletext/scrollabletext.go
index 4f9b1a4..54af1e7 100644
--- a/widgets/scrollabletext/scrollabletext.go
+++ b/widgets/scrollabletext/scrollabletext.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/streamwidget/streamwidget.go b/widgets/streamwidget/streamwidget.go
index 70aec2a..6b522d5 100644
--- a/widgets/streamwidget/streamwidget.go
+++ b/widgets/streamwidget/streamwidget.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/trackfocus/trackfocus.go b/widgets/trackfocus/trackfocus.go
index 2153cde..3c3666d 100644
--- a/widgets/trackfocus/trackfocus.go
+++ b/widgets/trackfocus/trackfocus.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/trackfocus/trackfocus_test.go b/widgets/trackfocus/trackfocus_test.go
index e96aabd..d0fef49 100644
--- a/widgets/trackfocus/trackfocus_test.go
+++ b/widgets/trackfocus/trackfocus_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
 package trackfocus
diff --git a/widgets/utils.go b/widgets/utils.go
index ec0a747..f815f08 100644
--- a/widgets/utils.go
+++ b/widgets/utils.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.
 
diff --git a/widgets/withscrollbar/withscrollbar.go b/widgets/withscrollbar/withscrollbar.go
index 308bc5f..8e1a71e 100644
--- a/widgets/withscrollbar/withscrollbar.go
+++ b/widgets/withscrollbar/withscrollbar.go
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Graham Clark. All rights reserved.  Use of this source
+// Copyright 2019-2021 Graham Clark. All rights reserved.  Use of this source
 // code is governed by the MIT license that can be found in the LICENSE
 // file.