Update citation file

Author: kstrotjohann

CITATION.cff

@@ -7,22 +7,16 @@ authors:
   - family-names: "Strotjohann"
     given-names: "Keno"
     orcid: "https://orcid.org/0009-0003-3675-3039"
-    affiliation: 
-      - "Swiss Tropical and Public Health Institute"
-      - "University of Basel"
-      - "Swiss Institute of Bioinformatics"
+    affiliation: "Swiss Tropical and Public Health Institute; University of Basel; Swiss Institute of Bioinformatics"
   - family-names: "Hodcroft"
     given-names: "Emma B"
     orcid: "https://orcid.org/0000-0002-0078-2212"
-    affiliation: 
-      - "Swiss Tropical and Public Health Institute"
-      - "University of Basel"
-      - "Swiss Institute of Bioinformatics"
+    affiliation: "Swiss Tropical and Public Health Institute; University of Basel; Swiss Institute of Bioinformatics"
 
 repository-code: "https://github.com/hodcroftlab/simplot-cl"
 url: "https://github.com/hodcroftlab/simplot-cl"
 
-version: "1.0.0"
+version: "1.0.3"
 date-released: 2026-02-26
 
 license: "AGPL-3.0-only"