citation.cff acording to cffconvert is fixed; validation to ci added

CI: missing "jobs:" readded

CITATION.cff fixed and CI updated for CITATION.cff validation

.github/workflows/ci.yml

@@ -27,6 +27,13 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install -e .[dev]
+        if [ "${{ matrix.python-version }}" = "3.13" ]; then
+          python -m pip install cffconvert
+        fi
+
+    - name: Validate CITATION.cff
+      if: ${{ matrix.python-version == '3.13' }}
+      run: cffconvert --validate
 
     - name: Prepare data and compile thermo database
       run: |

CITATION.cff

@@ -1,4 +1,5 @@
 cff-version: 1.1.0
+message: "If you use this software, please cite it as below."
 title: Gaspype
 abstract: Gaspype is a performant library for thermodynamic calculations with ideal gases
 authors:
@@ -14,6 +15,5 @@ date-released: "2025-06-24"
 #  - description: This is the collection of archived snapshots of all versions of Gaspype
 #    type: doi
 #    value: ""
-license: MIT License
+license: MIT
 repository-code: "https://github.com/DLR-Institute-of-Future-Fuels/gaspype"
-documentation: "https://dlr-institute-of-future-fuels.github.io/gaspype"