refactor environment inheritence tree to accommodate flexible action types/counts. fix bug in train profit handling

freqtrade/freqai/freqai_interface.py

@@ -7,7 +7,7 @@ import time
 from abc import ABC, abstractmethod
 from pathlib import Path
 from threading import Lock
-from typing import Any, Dict, Tuple, Optional
+from typing import Any, Dict, Optional, Tuple
 
 import numpy as np
 import pandas as pd