Merge branch 'hotfix/0.5.1' into develop

Author: rlskoeser

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Change Log
 
+## 0.5.1
+- Correct license identifier in CITATION.cff so it is valid
+
 ## 0.5
 
 - New `UnDelta` and `UnInt` classes for uncertain durations

CITATION.cff

@@ -25,7 +25,7 @@ authors:
   family-names: Casties
   affiliation: Max Planck Institute for the History of Science
   orcid: https://orcid.org/0009-0008-9370-1303
-version: '0.3'
-date-released: 2024-11-18
+version: '0.5'
+date-released: 2025-06-25
 repository-code: https://github.com/dh-tech/undate-python
-license: Apache 2
+license: Apache-2.0