Update __init__.py

Author: fkiraly

pypfopt/__init__.py

@@ -1,16 +1,10 @@
-from .black_litterman import (
-    BlackLittermanModel,
-    market_implied_prior_returns,
-    market_implied_risk_aversion,
-)
+from .black_litterman import (BlackLittermanModel,
+                              market_implied_prior_returns,
+                              market_implied_risk_aversion)
 from .cla import CLA
 from .discrete_allocation import DiscreteAllocation, get_latest_prices
-from .efficient_frontier import (
-    EfficientCDaR,
-    EfficientCVaR,
-    EfficientFrontier,
-    EfficientSemivariance,
-)
+from .efficient_frontier import (EfficientCDaR, EfficientCVaR,
+                                 EfficientFrontier, EfficientSemivariance)
 from .hierarchical_portfolio import HRPOpt
 from .risk_models import CovarianceShrinkage