Merge pull request #152 from brianch/gpl

GPLv3+ license for the engine

Author: chase-manning

LICENSE

@@ -115,7 +115,11 @@ Any and all contributions are welcome! Open up a PR to contribute some improveme
 
 ## License
 
-Pleco is distributed under the terms of the MIT license. See LICENSE-MIT for details. Opening a pull requests is assumed to signal agreement with these licensing terms.
+The Pleco Engine is distributed under the GNU General Public License version 3 (or any later version at your option). See [LICENSE](LICENSE) for full details.
+
+The Pleco crate (the library functionality) is distributed under the terms of the MIT license. See [pleco/LICENSE](pleco/LICENSE) for details.
+
+Opening a pull requests is assumed to signal agreement with these licensing terms.
 
 [build-link]: https://github.com/pleco-rs/Pleco/blob/main/.github/workflows/test.yml
 [build-badge]: https://img.shields.io/github/actions/workflow/status/pleco-rs/Pleco/test.yml?branch=main&style=for-the-badge&label=tanton&logo=github

README.md

@@ -110,7 +110,7 @@ Any and all contributions are welcome! Open up a PR to contribute some improveme
 
 ## License
 
-Pleco is distributed under the terms of the MIT license. See LICENSE-MIT for details. Opening a pull requests is assumed to signal agreement with these licensing terms.
+Pleco is distributed under the terms of the MIT license. See [LICENSE](LICENSE) for details. Opening a pull requests is assumed to signal agreement with these licensing terms.
 
 [build-link]: https://github.com/pleco-rs/Pleco/blob/main/.github/workflows/test.yml
 [build-badge]: https://img.shields.io/github/actions/workflow/status/pleco-rs/Pleco/test.yml?branch=main&style=for-the-badge&label=tanton&logo=github

pleco/README.md

@@ -7,7 +7,7 @@ homepage = "https://github.com/sfleischman105/Pleco"
 documentation = "https://docs.rs/pleco_engine/"
 readme = "README.md"
 keywords = ["chess","ai","engine","game","uci"]
-license = "MIT"
+license = "GPL-3.0+"
 categories = ["games","game-engines","command-line-utilities"]
 repository = "https://github.com/sfleischman105/Pleco"
 autobenches = false