FIX: the data paper allows a year prefix for the name of the project level

unittests/scifolder_cfood.yml

@@ -16,12 +16,12 @@ Data:  # name of the converter
       subtree: &template
         project_dir:  # name of the first subtree element which is a converter
           type: Directory
-          match: (?P<date>.*?)_(?P<identifier>.*)
+          match: ((?P<year>[0-9]{4,4})_)?(?P<identifier>.*)
           records:
             Project:  # this is an identifiable in this case
               parents:
               - Project  # not needed as the name is equivalent
-              date: $date
+              date: $year
               identifier: $identifier
       
           subtree:

unittests/scifolder_extended.yml

@@ -16,12 +16,12 @@ Data:  # name of the converter
       subtree: &template
         project_dir:  # name of the first subtree element which is a converter
           type: Directory
-          match: (?P<date>.*?)_(?P<identifier>.*)
+          match: ((?P<year>[0-9]{4,4})_)?(?P<identifier>.*)
           records:
             Project:  # this is an identifiable in this case
               parents:
               - Project  # not needed as the name is equivalent
-              date: $date
+              date: $year
               identifier: $identifier
       
           subtree:

unittests/scifolder_extended2.yml

@@ -16,12 +16,12 @@ Data:  # name of the converter
       subtree: &template
         project_dir:  # name of the first subtree element which is a converter
           type: Directory
-          match: (?P<date>.*?)_(?P<identifier>.*)
+          match: ((?P<year>[0-9]{4,4})_)?(?P<identifier>.*)
           records:
             Project:  # this is an identifiable in this case
               parents:
               - Project  # not needed as the name is equivalent
-              date: $date
+              date: $year
               identifier: $identifier
       
           subtree: