Add a LICENSE file and note the current status in the README

LICENSE

@@ -0,0 +1,7 @@
+Copyright (c) 2024 Jon Chambers
+
+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.

README.md

@@ -224,3 +224,9 @@ Test vectors for this project come from several sources:
 3. Test vectors for the BLAKE2 algorithms come from the [BLAKE2](https://www.blake2.net/) project
 
 The general idea behind Noise test vectors is [explained on the Noise wiki](https://github.com/noiseprotocol/noise_wiki/wiki/Test-vectors), though most publicly available test vectors seem to deviate from the format described on the wiki to some degree.
+
+## License and status
+
+java-noise is published under the [MIT License](https://opensource.org/licenses/MIT).
+
+java-noise has not yet been published to any artifact repository, but likely will be in the future following a self-imposed "cooling down" period. java-noise passes tests from a variety of sources, but has not received an independent security audit of any kind.