Fix imports

Author: AlejandroBaron

scripts/simulate.py

@@ -1,5 +1,7 @@
 # %%
-from downpyment.mortgage import Mortgage, Interest, YEARLY_INTEREST_SCALE, Investment
+from downpyment.mortgage import Mortgage
+from downpyment.interest import Interest, YEARLY_INTEREST_SCALE
+from downpyment.investment import Investment
 from downpyment.reporting import MortgageReport
 
 

src/downpyment/reporting.py

@@ -2,8 +2,8 @@
     Mortgage,
     EarlyPayment,
     MortgageSimulation,
-    Investment,
 )
+from downpyment.investment import Investment
 from matplotlib import pyplot as plt
 from typing import Optional
 import numpy as np