Add default number of sessions

open_workout_coach/map_yaml_to_database.py

@@ -93,7 +93,7 @@ def map_config_to_workout_file(config):
         )
         for item in config['exercises']
     ]
-    sessions = [create_workout_session(items)] * config['n_sessions']
+    sessions = [create_workout_session(items)] * config.get('n_sessions', 1)
     db = create_workout_database(config['name'], sessions)
     return db