Suggestion to add JOSS paper to citations (#160)

Author: TomKellyGenetics

CITATION.bib

@@ -1,5 +1,23 @@
+@article{MoroniMonticone2023,
+         author       = {Moroni, Claudio and Monticone, Pietro},
+         title = {MultilayerGraphs.jl: Multilayer Network Science in Julia},
+         abstract     = {MultilayerGraphs.jl is a Julia package for the creation, manipulation, and analysis of the structure, dynamics, and functions of multilayer graphs.}
+         doi = {10.21105/joss.05116},
+         institution  = {University of Turin (UniTO)},
+         license      = {MIT},
+         organization = {Interdisciplinary Physics Team (InPhyT)},
+         keywords     = {Julia Language, Julia Package, Graph Theory, Applied Graph Theory, Network Theory, Network Science, Graphs, Multilayer Graphs, Multilevel Graphs, Hierarchical Graphs, Networks, Multilayer Networks, Multilevel Networks, Hierarchical Networks, Complexity, Complex Systems},
+         url = {https://doi.org/10.21105/joss.05116},
+         year = {2023},
+         publisher = {The Open Journal},
+         volume = {8},
+         number = {83},
+         pages = {5116},
+         journal = {Journal of Open Source Software}
+}
+
 @software{Moroni_Monticone_MultilayerGraphs_2022,
-         abstract     = {A Julia package for the creation, manipulation and analysis of the structure, dynamics and functions of multilayer graphs.},
+      abstract     = {A Julia package for the creation, manipulation and analysis of the structure, dynamics and functions of multilayer graphs.},
          author       = {Moroni, Claudio and Monticone, Pietro},
          doi          = {10.5281/zenodo.7009172},
          institution  = {University of Turin (UniTO)},
@@ -9,4 +27,4 @@ @software{Moroni_Monticone_MultilayerGraphs_2022
          title        = {MultilayerGraphs.jl},
          url          = {https://doi.org/10.5281/zenodo.7009172},
          year         = {2022}
-         }
+}

CITATION.cff

@@ -0,0 +1,27 @@
+cff-version: 1.2.0
+message: If you use this software, please cite both the article from preferred-citation and the software itself.
+authors:
+  - family-names: Moroni
+    given-names: Claudio
+  - family-names: Monticone
+    given-names: Pietro
+title: 'MultilayerGraphs.jl: Multilayer Network Science in Julia'
+version: 1.0.0
+url: https://doi.org/10.21105/joss.05116
+doi: 10.21105/joss.05116
+date-released: '2023-01-07'
+preferred-citation:
+  authors:
+    - family-names: Moroni
+      given-names: Claudio
+    - family-names: Monticone
+      given-names: Pietro
+  title: 'MultilayerGraphs.jl: Multilayer Network Science in Julia'
+  doi: 10.21105/joss.05116
+  url: https://doi.org/10.21105/joss.05116
+  type: article-journal
+  pages: '5116'
+  year: '2023'
+  conference: {}
+  publisher:
+    name: The Open Journal