Relicense to ODC-By v1.0 (match upstream DeepJEB/SimJEB)

README.txt

@@ -111,7 +111,8 @@ NOTES
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 LICENSE
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-This dataset is distributed under CC BY-NC 4.0 (Creative Commons
-Attribution-NonCommercial 4.0 International). See the LICENSE file.
-Non-commercial use only; attribution (cite the DeepJEB++ paper) required.
-https://creativecommons.org/licenses/by-nc/4.0/
+This dataset is distributed under the Open Data Commons Attribution
+License (ODC-By) v1.0. See the LICENSE file.
+Free to use, modify, and share -- including commercially -- with attribution
+(please cite the DeepJEB++ paper and the upstream SimJEB and DeepJEB datasets).
+https://opendatacommons.org/licenses/by/1-0/