build: 🔧 update package metadata, including adding Joel and citation

CITATION.cff

@@ -1,6 +1,8 @@
 title: "Check Data Package: Ensure the correctness and compliance of your Data Package"
-# TODO: Add abstract of Python package.
-abstract: ""
+abstract: |
+  Check your Data Package's metadata against the Data Package standard to ensure that
+  it's compliant with the standard. See https://check-datapackage.seedcase-project.org
+  for more information.
 authors:
   - family-names: Johnston
     given-names: Luke William
@@ -18,9 +20,11 @@ authors:
     given-names: Marton
     affiliation: "Steno Diabetes Center Aarhus"
     orcid: "https://orcid.org/0009-0007-4628-655X"
+  - family-names: Ostblom
+    given-names: Joel
 cff-version: 1.2.0
-# doi: ""
-# date-released: ""
+doi: "10.5281/zenodo.17733655"
+date-released: "2025-11-27"
 keywords:
   - "data package"
   - "data package checks"
@@ -31,9 +35,7 @@ keywords:
   - "metadata"
   - "metadata checks"
   - "metadata verification"
-  - "verification"
   - "data engineering"
-  - "metadata checks"
 license: MIT
 message: "If you use this Python package, please cite it using these metadata."
 repository-code: "https://github.com/seedcase-project/check-datapackage"

README.md

@@ -140,3 +140,26 @@ This project is licensed under the [MIT License](LICENSE.md).
 ## Changelog
 
 For a list of changes, see our [changelog](CHANGELOG.md) page.
+
+## Citing
+
+This project is part of the [Seedcase
+Project](https://seedcase-project.org), which is a collaborative effort
+to create a framework for data management and analysis in research. If
+you use this project in your work, please cite it as follows:
+
+Johnston L.W., Brødbæk S.K., Beicher K., Vago M., Ostblom J. (2025).
+Check Data Package: Ensure the correctness and compliance of your Data
+Package DOI: 10.5281/zenodo.17733655 URL:
+https://check-datapackage.seedcase-project.org
+
+Or as a BibTeX entry:
+
+    @misc{YourReferenceHere,
+    author = {Johnston, Luke William and Brødbæk, Signe Kirk and Beicher, Kristiane and Vago, Marton and Ostblom, Joel},
+    doi = {10.5281/zenodo.17733655},
+    month = {11},
+    title = {Check Data Package: Ensure the correctness and compliance of your Data Package},
+    url = {https://check-datapackage.seedcase-project.org},
+    year = {2025}
+    }

README.qmd

@@ -2,6 +2,9 @@
 format: gfm
 metadata-files:
   - _metadata.yml
+execute:
+  echo: false
+jupyter: python3
 ---
 
 <!-- NOTE: This README.md is auto-generated from README.qmd. Edit that file. -->
@@ -119,3 +122,21 @@ This project is licensed under the [MIT License](LICENSE.md).
 ## Changelog
 
 For a list of changes, see our [changelog](CHANGELOG.md) page.
+
+## Citing
+
+This project is part of the [Seedcase
+Project](https://seedcase-project.org), which is a collaborative effort
+to create a framework for data management and analysis in research. If
+you use this project in your work, please cite it as follows:
+
+```{python}
+#| output: asis
+!uvx --quiet cffconvert --format apalike
+```
+
+Or as a BibTeX entry:
+
+```{python}
+!uvx --quiet cffconvert --format bibtex
+```

pyproject.toml

@@ -1,19 +1,20 @@
 [project]
 name = "check-datapackage"
 version = "0.23.1"
-# TODO: Add a description of the package.
-description = ""
+description = "Check your Data Package's metadata against the Data Package standard to ensure that it's compliant with the standard"
 authors = [
   {name = "Luke W. Johnston", email = "lwjohnst@gmail.com" },
   {name = "Kristiane Beicher", email = "kris.beicher@clin.au.dk" },
   {name = "Signe Kirk Brødbæk", email = "signekb@clin.au.dk" },
   {name = "Marton Vago", email = "marton.vago95@gmail.com" },
+  {name = "Joel Ostblom", email = "joel@joelostblom.com" },
 ]
 maintainers = [
   {name = "Luke W. Johnston", email = "lwjohnst@gmail.com" },
   {name = "Kristiane Beicher", email = "kris.beicher@clin.au.dk" },
   {name = "Signe Kirk Brødbæk", email = "signekb@clin.au.dk" },
   {name = "Marton Vago", email = "marton.vago95@gmail.com" },
+  {name = "Joel Ostblom", email = "joel@joelostblom.com" },
 ]
 readme = "README.md"
 license = "MIT"