Add MIT release clause

LICENSING.md

@@ -0,0 +1,47 @@
+Skript is licensed under the [GNU General Public License (Version 3)](LICENSE).
+
+However, to foster a better open-source community, and in the interest of further opening this project in the future,
+we ask contributors to release their code under the MIT License.
+Since it is less restrictive than GPLv3, it provides us and other developers
+with greater flexibility when making use of your code.
+
+To learn more about this license, you can visit [choosealicense.com](https://choosealicense.com/licenses/mit/).
+You can also view the full text of the license below:
+<details>
+<summary>MIT License</summary>
+
+```text
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+```
+</details>
+
+If you wish to release your contributions to this repository under the MIT License,
+please add your name below in your pull request.
+
+When adding your name, please follow the example format below:
+
+`<name> (<commit email address>)`
+> [!NOTE]
+> For name, you may choose to use your real name or GitHub account name. \
+> If you use more than one commit email address, please include all of them.
+
+```text
+APickledWalrus ([email protected])
+Sovde ([email protected])
+```

README.md

@@ -191,5 +191,6 @@ contact us about any problems you might have with them.
 ## Developers
 You can find all contributors [here](https://github.com/SkriptLang/Skript/graphs/contributors).
 
-All code is owned by its writer, licensed for others under GPLv3 (see LICENSE)
-unless otherwise specified.
+All code is owned by its writer, licensed for others under GPLv3 (see [LICENSE](LICENSE)).
+Some contributors may choose to release their code under the MIT License.
+Further information can be found within [LICENSING.md](LICENSING.md).

code-conventions.md

@@ -64,6 +64,8 @@ With the exception of contacting our own resources (e.g. to check for updates) c
 ## Licensing
 
 Code contributed must be licensed under GPLv3, by **you**.
+Some contributors may choose to release their code under the MIT License.
+Further information can be found within [LICENSING.md](LICENSING.md).
 We expect that any code you contribute is either owned by you or you have explicit permission to provide and license it to us.
 
 Licenses do not need to be printed in individual files (or packages) unless the licence applying to the code in