Updated utils init and added a new line in code_utils

Author: SuhailB

openevolve/utils/__init__.py

@@ -32,6 +32,7 @@
     "retry_async",
     "run_in_executor",
     "apply_diff",
+    "calculate_edit_distance",
     "extract_code_language",
     "extract_diffs",
     "format_diff_summary",

openevolve/utils/code_utils.py

@@ -179,6 +179,7 @@ def calculate_edit_distance(code1: str, code2: str) -> int:
 
     return dp[m][n]
 
+
 def extract_code_language(code: str) -> str:
     """
     Try to determine the language of a code snippet