better support for KeyboardInterrupt exceptions

gallery_dl/__init__.py

@@ -54,5 +54,8 @@ def main():
     conf = parse_config_file(opts.config)
     dlmgr = DownloadManager(opts, conf)
 
-    for url in opts.urls:
+    try:
-        dlmgr.add(url)
+        for url in opts.urls:
+            dlmgr.add(url)
+    except KeyboardInterrupt:
+        print("KeyboardInterrupt")

gallery_dl/extractor/common.py

@@ -75,8 +75,7 @@ class AsynchronousExtractor(Extractor):
         Extractor.__init__(self)
         queue_size = int(config.get("general", "queue-size", fallback=5))
         self.__queue = queue.Queue(maxsize=queue_size)
-        self.__thread = threading.Thread(target=self.async_items)
+        self.__thread = threading.Thread(target=self.async_items, daemon=True)
-        # self.__thread = threading.Thread(target=self.async_images, daemon=True)
 
     def __iter__(self):
         get = self.__queue.get