[SQUASH] Use HyperStrategyMixin as part of IStrategy interface.

freqtrade/strategy/__init__.py

@@ -2,6 +2,5 @@
 from freqtrade.exchange import (timeframe_to_minutes, timeframe_to_msecs, timeframe_to_next_date,
                                 timeframe_to_prev_date, timeframe_to_seconds)
 from freqtrade.strategy.interface import IStrategy
-from freqtrade.strategy.hyper import HyperStrategyMixin, IntParameter, FloatParameter,\
-    CategoricalParameter
+from freqtrade.strategy.hyper import IntParameter, FloatParameter, CategoricalParameter
 from freqtrade.strategy.strategy_helper import merge_informative_pair, stoploss_from_open

freqtrade/strategy/hyper.py

@@ -135,13 +135,9 @@ class HyperStrategyMixin(object):
      strategy logic.
     """
 
-    # Hint that class can be used with HyperOptAuto.
-    HYPER_STRATEGY = 1
-
     def __init__(self):
         """
         Initialize hyperoptable strategy mixin.
-        :param config:
         """
         self._load_params(getattr(self, 'buy_params', None))
         self._load_params(getattr(self, 'sell_params', None))

freqtrade/strategy/interface.py

@@ -18,6 +18,7 @@ from freqtrade.exceptions import OperationalException, StrategyError
 from freqtrade.exchange import timeframe_to_minutes, timeframe_to_seconds
 from freqtrade.exchange.exchange import timeframe_to_next_date
 from freqtrade.persistence import PairLocks, Trade
+from freqtrade.strategy.hyper import HyperStrategyMixin
 from freqtrade.strategy.strategy_wrapper import strategy_safe_wrapper
 from freqtrade.wallets import Wallets
 
@@ -59,7 +60,7 @@ class SellCheckTuple(NamedTuple):
     sell_type: SellType
 
 
-class IStrategy(ABC):
+class IStrategy(ABC, HyperStrategyMixin):
     """
     Interface for freqtrade strategies
     Defines the mandatory structure must follow any custom strategies