Fix defaults for replace_single_newlines variable

abogen/queued_item.py

@@ -13,7 +13,7 @@ class QueuedItem:
     subtitle_mode: str
     output_format: str
     total_char_count: int
-    replace_single_newlines: bool = False
+    replace_single_newlines: bool = True
     use_silent_gaps: bool = False
     subtitle_speed_method: str = "tts"
     save_base_path: str = None