added metadata

DISCLAMER.md

+This software has been approved for release by the U.S. Geological Survey (USGS). Although the software has been subjected to rigorous review, the USGS reserves the right to update the software as needed pursuant to further analysis and review. No warranty, expressed or implied, is made by the USGS or the U.S. Government as to the functionality of the software and related material nor shall the fact of release constitute any such warranty. Furthermore, the software is released on condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use.
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LICENSE.md

-This is free and unencumbered software released into the public domain.
-
-Anyone is free to copy, modify, publish, use, compile, sell, or
-distribute this software, either in source code form or as a compiled
-binary, for any purpose, commercial or non-commercial, and by any
-means.
-
-In jurisdictions that recognize copyright laws, the author or authors
-of this software dedicate any and all copyright interest in the
-software to the public domain. We make this dedication for the benefit
-of the public at large and to the detriment of our heirs and
-successors. We intend this dedication to be an overt act of
-relinquishment in perpetuity of all present and future rights to this
-software under copyright law.
-
-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 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.
-
-For more information, please refer to <http://unlicense.org/>
+Unless otherwise noted, this project is in the public domain in the
+United States.
+
+It contains materials that originally came from the United States
+Geological Survey, an agency of the United States Department of
+Interior.  For more information on their copyright policies, see
+https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits
+
+It also contains materials from contributors that have waived their
+copyright interest to the public domain.
+
+Additionally, the authors waive copyright and related rights in the
+work worldwide through the CC0 1.0 Universal public domain dedication.
+
+CC0 1.0 Universal Summary
+-------------------------
+
+This is a human-readable summary of the [Legal Code (read the full
+text)](https://creativecommons.org/publicdomain/zero/1.0/legalcode).
+
+
+### No Copyright
+
+The authors have associated their contributions to the ISIS project
+with this deed, and have dedicated the work to the public domain
+by waiving all of their rights to the work worldwide under copyright
+law, including all related and neighboring rights, to the extent
+allowed by law.
+
+You can copy, modify, distribute and perform the work, even for
+commercial purposes, all without asking permission.
+
+
+### Other Information
+
+In no way are the patent or trademark rights of any person affected
+by CC0, nor are the rights that other persons may have in the work
+or in how the work is used, such as publicity or privacy rights.
+
+Unless expressly stated otherwise, the authors who have associated
+the ISIS project with this deed make no warranties about the work,
+and disclaim liability for all uses of the work, to the fullest
+extent permitted by applicable law. When using or citing the work,
+you should not imply endorsement by the authors.
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code.json

+[
+    {
+      "name": "plio",
+      "organization": "U.S. Geological Survey",
+      "description": "A planetary surface data input/output library written in Python.",
+      "version": "1.5.0",
+      "status": "Release",
+
+      "permissions": {
+        "usageType": "openSource",
+        "licenses": [
+          {
+            "name": "Public Domain, CC0-1.0",
+            "URL": "https://github.com/USGS-Astrogeology/plio/blob/master/LICENSE.md"
+          }
+        ]
+      },
+  
+      "homepageURL": "https://plio.readthedocs.io/en/latest/?badge=latest",
+      "downloadURL": "https://github.com/USGS-Astrogeology/plio/archive/refs/tags/v1.5.0.zip",
+      "disclaimerURL": "https://github.com/USGS-Astrogeology/plio/blob/master/DISCLAMER.md",
+      "repositoryURL": "https://github.com/USGS-Astrogeology/plio/",
+      "vcs": "git",
+  
+      "laborHours": 0,
+  
+      "tags": [
+        "Planetary",
+        "Remote Sensing",
+        "Photogrammetry",
+        "Data Processing"
+      ],
+  
+      "languages": [
+        "python"
+      ],
+  
+      "contact": {
+        "name": "Dr. Jason Laura",
+        "email": "jlaura@usgs.gov"
+      },
+  
+      "date": {
+        "metadataLastUpdated": "2022-05-12"
+      }
+    }
+  ]
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