Empty strings skip validation only when the field allows them; replaces

#79

worf/validators.py

@@ -187,7 +187,7 @@ def validate_bundle(self, key):
             annotation.output_field if annotation else self.model._meta.get_field(key)
         )
 
-        if field.blank and self.bundle[key] == "":
+        if field.blank and field.empty_strings_allowed and self.bundle[key] == "":
             pass
 
         elif field.null and self.bundle[key] is None: