[LICENSE] relicense project under MPL 2.0

relicensed due to GitHub's Copilot push. details in README.md.

README.md

@@ -1,3 +1,23 @@
 # resumarkdown
 
 Create a resume with Markdown and CSS
+
+## Previous location
+
+This repository was previously hosted on
+[GitHub](https://github.com/tweakdeveloper/resumarkdown). Due to GitHub's
+expansion of Copilot (see [the License section](#license) for further details),
+it has been moved to this self-hosted repository.
+
+## License
+
+This repository's code was licensed under the terms of
+[the MIT license](LICENSE.up-to-ea30f9) up to and including commit ea30f9. You
+may apply this license's terms to all work that appears in the repository prior
+to this commit ("this commit" referring to the commit immediately following
+ea30f9).
+
+From this commit forward, the code in this repo is licensed under the terms of
+the [Mozilla Public License 2.0](https://mozilla.org/MPL/2.0/). This change was
+made due to GitHub's lack of transparency vis-à-vis Copilot's use of public
+repositories for the purposes of training their LLM.