Merge branch 'f-key-variables' into 'dev'

ENH: allow variable replacements in keys

See merge request !27

src/caoscrawler/converters.py

@@ -164,6 +164,11 @@ def create_records(values: GeneralStore,
         for key, value in record.items():
             if key == "parents" or key == "role":
                 continue
+
+            # Allow replacing variables in keys / names of properties:
+            key_template = Template(key)
+            key = key_template.safe_substitute(**values.get_storage())
+            
             keys_modified.append((name, key))
             propvalue, collection_mode = handle_value(value, values)