Add -V/--version flag

core/handle.py

@@ -108,6 +108,10 @@ def get_arguments(raw_args=None, to_group=True, to_merge=True):
         group.add_argument(
             '-u', '--username',
             help="load tracks from user's playlist into <playlist_name>.txt")
+        group.add_argument(
+            '-V', '--version',
+            help="show version and exit",
+            action='store_true')
 
     parser.add_argument(
         '-m', '--manual', default=config['manual'],

spotdl.py

@@ -171,6 +171,11 @@ def download_single(raw_song, number=None):
 
 def main():
     const.args = handle.get_arguments()
+
+    if const.args.version:
+        print('spotdl {version}'.format(version=__version__))
+        sys.exit()
+
     internals.filter_path(const.args.folder)
     youtube_tools.set_api_key()