Standardize project to KDAB copyright policy

For entire project: remove year from the statement

.reuse/dep5

@@ -5,22 +5,22 @@ Source: https://www.github.com/KDAB/KDDockWidgets
 
 #misc source code
 Files: *.qrc *.json *.xml
-Copyright: 2019-2023 Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
+Copyright: Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
 License: GPL-2.0-only OR GPL-3.0-only
 
 #misc documentation
 Files: CONTRIBUTORS.txt Changelog README.md README-porting.md README-QtQuick.md README-Flutter.md README-WASM.md README-Wayland.md README-troubleshooting conan/README.txt python/examples/README.txt python/examples-qt6/README.txt docs_devel/*.md docs/KDDockWidgets-CopyrightAssignmentForm.pdf *.html src/3rdparty/qcoro/README examples/qtquick/customseparator/README.md docs/book/** book.toml
-Copyright: 2019-2023 Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
+Copyright: Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
 License: GPL-2.0-only OR GPL-3.0-only
 
 #misc config files
 Files: .pre-commit-config.yaml .codespellrc .krazy .cmake-format .clang-format .clangd .clazy .clang-tidy .gitignore .mdlrc .mdlrc.rb .pep8 .pylintrc appveyor.yml mkdocs.yml .github/workflows/mdbook.yml code.dev-*.code-workspace code.dev*.code-workspace vscode.code-workspace docs/api/Doxyfile.cmake distro/* *.yaml .github/workflows/pip-requirements.txt
-Copyright: 2019-2023 Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
+Copyright: Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
 License: BSD-3-Clause
 
 #artwork
 Files: screencap.gif images/* src/img/* docs/api/*.png examples/dockwidgets/assets/*.png src/img/classic_indicators/*.png examples/flutter/assets/*.png src/flutter/dart/assets/classic_indicators/*.png
-Copyright: 2019-2023 Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
+Copyright: Klarälvdalens Datakonsult AB, a KDAB Group company <[email protected]>
 License: GPL-2.0-only OR GPL-3.0-only
 
 #3rdparty ECM (a few are missing reuse headers)

LICENSE.GPL.txt

@@ -1,4 +1,4 @@
- The KDDockWidgets software is Copyright (C) 2018-2023 Klaralvdalens Datakonsult AB.
+ The KDDockWidgets software © Klaralvdalens Datakonsult AB.
 
  You may use, distribute and copy the KDDockWidgets software under the terms of
  the GNU General Public License version 2 or under the terms of GNU General

LICENSE.txt

@@ -1,5 +1,5 @@
-KDDockWidgets is (C) 2018-2023, Klarälvdalens Datakonsult AB (KDAB)
-and is licensed according to the terms of the:
+KDDockWidgets © Klarälvdalens Datakonsult AB (KDAB) and is licensed according
+to the terms of the:
  GNU General Public License version 2.0 (see LICENSES/GPL-2.0-only.txt)
 or the
  GNU General Public License version 3.0 (see LICENSES/GPL-3.0-only.txt).

README.md

@@ -66,9 +66,8 @@ to expose every internal widget and every knob for the app developer to tune.
 
 ## Licensing
 
-KDDockWidgets is (C) 2019-2023, Klarälvdalens Datakonsult AB (KDAB) and is
-licensed according to the terms of the [GPL 2.0](LICENSES/GPL-2.0-only.txt)
-or [GPL 3.0](LICENSES/GPL-3.0-only.txt).
+KDDockWidgets is © Klarälvdalens Datakonsult AB (KDAB) and is licensed according
+to the terms of the [GPL 2.0](LICENSES/GPL-2.0-only.txt) or [GPL 3.0](LICENSES/GPL-3.0-only.txt).
 
 Contact KDAB at <[email protected]> to inquire about commercial licensing.
 

docs/api/footer.html

@@ -1,7 +1,7 @@
     <hr>
     <div style="float: left;">
       <img src="kdab-logo-16x16.png">
-      <font style="font-weight: bold;">&copy; 2019-2023 Klar&auml;lvdalens Datakonsult AB (KDAB)</font>
+      <font style="font-weight: bold;">&copy; Klar&auml;lvdalens Datakonsult AB (KDAB)</font>
       <br>
       "The Qt, C++ and OpenGL Experts"<br>
       <a href="https://www.kdab.com/">https://www.kdab.com/</a>

docs/book/src/licensing.md

@@ -1,7 +1,7 @@
 # Licensing
 
-KDDockWidgets is (C) 2019-2023, Klarälvdalens Datakonsult AB (KDAB) and is
-licensed according to the terms of the [GPL 2.0](https://raw.githubusercontent.com/KDAB/KDDockWidgets/2.0/LICENSES/GPL-2.0-only.txt)
+KDDockWidgets is © Klarälvdalens Datakonsult AB (KDAB) and is licensed according
+to the terms of the [GPL 2.0](https://raw.githubusercontent.com/KDAB/KDDockWidgets/2.0/LICENSES/GPL-2.0-only.txt)
 or [GPL 3.0](https://raw.githubusercontent.com/KDAB/KDDockWidgets/2.0/LICENSES/GPL-3.0-only.txt).
 
 Contact KDAB at <[email protected]> to inquire about commercial licensing.