Add Date element: metanorma/metanorma-standoc#371

Author: opoudjis

images/StandardDoc_Blocks.png

@@ -0,0 +1,30 @@
+class Date {
+  definition {
+    Localisable rendering of a date
+  }
+  value: String {
+    definition {
+      Date to be rendered in ISO 8601 format.
+    }
+  } 
+  format: String[0..1] {
+    definition {
+      Format to be used to render date, as a strftime formatting string.
+    }
+  } 
+  language: Iso639Code[0..1] {
+    definition {
+      Format to be used to render date, as a as an ISO-639 3-letter code.
+    }
+  } 
+  script: Iso15924Code[0..1] {
+    definition {
+      Script to be used to render date, as an ISO-15924 code.
+    }
+  } 
+  locale: String[0..1] {
+    definition {
+      Locale to be used to render date.
+    }
+  } 
+}

images/StandardDoc_Blocks_New.png

@@ -24,6 +24,7 @@ diagram StandardDoc_Inline {
   include ../models/standard_document/elements/StandardPageBreakElement.lutaml
   include ../models/standard_document/elements/OrientationType.lutaml
   include ../models/standard_document/elements/Add.lutaml
+  include ../models/standard_document/elements/Date.lutaml
   include ../models/standard_document/elements/Del.lutaml
   include ../models/standard_document/elements/Span.lutaml
 
@@ -157,6 +158,11 @@ diagram StandardDoc_Inline {
     member Add
     owner_type inheritance
   }
+  association {
+    owner TextElement
+    member Date
+    owner_type inheritance
+  }
   association {
     owner TextElement
     member Del