Fix parse_tokens

dan/utils.py

@@ -106,8 +106,8 @@ def list_to_batches(iterable, n):
         yield batch
 
 
-def parse_tokens(filename: Path) -> Dict[str, EntityType]:
+def parse_tokens(filename: str) -> Dict[str, EntityType]:
     return {
         name: EntityType(**tokens)
-        for name, tokens in yaml.safe_load(filename.read_text()).items()
+        for name, tokens in yaml.safe_load(Path(filename).read_text()).items()
     }