MAITN: make selection of properties case insensitive

src/caoscrawler/identifiable_adapters.py

@@ -353,7 +353,7 @@ class IdentifiableAdapter(metaclass=ABCMeta):
                 # property
                 continue
 
-            options = [p.value for p in se.properties if p.name == prop.name]
+            options = [p.value for p in se.properties if p.name.lower() == prop.name.lower()]
             if len(options) == 0:
                 raise MissingIdentifyingProperty(
                     f"The following record is missing an identifying property:\n"