Merge branch 'authors-release-3-9' into 'master'

Authors release 3 9

See merge request !224

(cherry picked from commit 0415dd18)

ca6197cf Update AUTHORS.md
2a5da45e Update README.md gpl 2 to 3
b8110bb9 Update README.md change to newer link for gpl

Co-authored-by: Leon Keim <leon.keim@googlemail.com>

AUTHORS.md

@@ -5,8 +5,8 @@ The DuMux Lecture contributors are
 | 2017-2018       | Sina Ackermann         |
 | 2008-2012       | Katherina Baber        |
 | 2015            | Martin Beck            |
-| 2022-2023       | Ivan Buntic            |
-| 2012-2021, 2023 | Holger Class           |
+| 2022-2024       | Ivan Buntic            |
+| 2012-2021, 2023-2024 | Holger Class           |
 | 2018-2021       | Edward 'Ned' Coltman   |
 | 2012-2013       | Melanie Darcis         |
 | 2018-2020       | Simon Emmert           |
@@ -17,10 +17,11 @@ The DuMux Lecture contributors are
 | 2016-2020, 2022 | Katharina Heck         |
 | 2015-2016, 2019 | Johannes Hommel        |
 | 2012            | Johannes Irtenkauf     |
-| 2020, 2022-2023 | Mathis Kelm            |
+| 2024            | Leon Keim              |
+| 2020, 2022-2024 | Mathis Kelm            |
 | 2021-2022       | Stefanie Kiemle        |
 | 2014            | Alexander Kissinger    |
-| 2015-2023       | Timo Koch              |
+| 2015-2024       | Timo Koch              |
 | 2018            | Melanie Lipp           |
 | 2011            | Andreas Lauser         |
 | 2023            | Hamza Oukili           |
@@ -29,9 +30,9 @@ The DuMux Lecture contributors are
 | 2018-2020, 2022 | Theresa Schollenberger |
 | 2012-2015       | Nicolas Schwenck       |
 | 2018            | Gabriele Seitz         |
-| 2020            | Maziar Veyskarami      |
+| 2020,2024       | Maziar Veyskarami      |
 | 2012-2014       | Lena Walter            |
-| 2022            | Yue Wang               |
+| 2022, 2024      | Yue Wang               |
 | 2020            | Felix Weinhardt        |
 | 2015-2020       | Kilian Weishaupt       |
 | 2018            | Kai Wendel             |

README.md

@@ -23,7 +23,7 @@ License
 -------
 
 DuMuX-Lecture is licensed under the terms and conditions of the GNU
-General Public License (GPL) version 2 or - at your option - any later
+General Public License (GPL) version 3 or - at your option - any later
 version. The [GPL can be read online][2], or in the `LICENSE.md` file
 provided in the topmost directory of the DuMuX source code tree.
 
@@ -52,4 +52,4 @@ make -j8 build_tests && ctest -j8
 
 [0]: http://dumux.org
 [1]: http://www.hydrosys.uni-stuttgart.de/index.en.php
-[2]: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+[2]: https://www.gnu.org/licenses/gpl-3.0.en.html