Merge pull request #1503 from zm711/list-ios-recursive

Add extra recursive step in `list_candidate_ios`

neo/io/__init__.py

@@ -453,7 +453,7 @@ def list_candidate_ios(file_or_folder, ignore_patterns=["*.ini", "README.txt", "
 
     elif file_or_folder.is_dir():
         # scan files in folder to determine io type
-        filenames = [f for f in file_or_folder.glob("*") if f.is_file()]
+        filenames = [f for f in file_or_folder.glob("**/*") if f.is_file()]
         # keep only relevant filenames
         filenames = [f for f in filenames if f.suffix and not any([f.match(p) for p in ignore_patterns])]