Centralize algorithm imports

Algorithm.Python/DividendAlgorithm.py

@@ -1,4 +1,4 @@
-# QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
+# QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
 # Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -11,18 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from clr import AddReference
-AddReference("System")
-AddReference("QuantConnect.Algorithm")
-AddReference("QuantConnect.Common")
-
-from System import *
-from QuantConnect import *
-from QuantConnect.Algorithm import *
-from QuantConnect.Brokerages import *
-from QuantConnect.Data import *
-from QuantConnect.Data.Market import *
-from QuantConnect.Orders import *
+from AlgorithmImports import *
 
 ### <summary>
 ### Demonstration of payments for cash dividends in backtesting. When data normalization mode is set
@@ -70,4 +59,4 @@ class DividendAlgorithm(QCAlgorithm):
     def OnOrderEvent(self, orderEvent):
         # orders get adjusted based on split events to maintain order value
         order = self.Transactions.GetOrderById(orderEvent.OrderId)
-        self.Log(f"{self.Time} >> ORDER >> {order}")
+        self.Log(f"{self.Time} >> ORDER >> {order}")