Add CITATION.cff with information to the best of my knowledge

CITATION.cff

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+# This CITATION.cff file was generated with cffinit.
+# Visit https://bit.ly/cffinit to generate yours today!
+
+cff-version: 1.2.0
+title: BrainGlobe AtlasAPI
+message: >-
+  If you use this software, please cite it using the
+  metadata from this file.
+type: software
+authors:
+  - given-names: Federico
+    family-names: Claudi
+    affiliation: 'Sainsbury Wellcome Centre, University College London'
+  - given-names: Luigi
+    affiliation: 'Institute of Neuroscience, Technical University of Munich'
+    family-names: Petrucco
+  - given-names: Adam
+    family-names: Tyson
+    affiliation: 'Sainsbury Wellcome Centre, University College London'
+    orcid: 'https://orcid.org/0000-0003-3225-1130'
+    email: [email protected]
+repository-code: 'https://github.com/brainglobe/bg-atlasapi'
+url: >-
+  https://brainglobe.info/documentation/bg-atlasapi/index.html
+abstract: >-
+  A common interface for programmers to download and process
+  brain atlas data from multiple sources.
+license: BSD-3-Clause
+commit: 70335e4bdd87a32b413088fc5ac4f3144bbbd20c
+version: 1.0.2
+date-released: '2023-03-21'
+preferred-citation:
+  type: article
+  authors:
+  - given-names: Federico
+    family-names: Claudi
+    affiliation: 'Sainsbury Wellcome Centre, University College London'
+  - given-names: Luigi
+    affiliation: 'Institute of Neuroscience, Technical University of Munich'
+    family-names: Petrucco
+  - given-names: Adam
+    family-names: Tyson
+    affiliation: 'Sainsbury Wellcome Centre, University College London'
+  - given-names: Tiago
+    family-names: Branco
+    affiliation: 'Sainsbury Wellcome Centre, University College London'
+  - given-names: Troy
+    family-names: Margrie
+    affiliation: 'Sainsbury Wellcome Centre, University College London'
+  - given-names: Ruben
+    family-names: Portugues
+    affiliation: 'Max Planck Institute of Neurobiology, Research Group of Sensorimotor Control, Martinsried, Germany'
+  doi: "10.21105/joss.02668"
+  url: "https://doi.org/10.21105/joss.02668"
+  journal: "Journal of Open Source Software"
+  month: 10
+  year: 2020
+  title: "BrainGlobe Atlas API: a common interface for neuroanatomical atlases"
+  issue: 54
+  volume: 5
+citation-sentence: >-
+  This work makes use of the BrainGlobe AtlasAPI for processing atlas data from multiple sources.