Update CHANGELOG.md

CHANGELOG.md

@@ -1,15 +1,25 @@
 # CHANGELOG
 
+## 1.2.2 (2024-09-27)
+
+- discriminator="type" removed from strategy: list[StrategyLeg] = Field(..., min_length=1) in models.py, since
+it was causing errors in new Pydantic versions.
+- Changed StotckStrategy and OptionStrategy to Stock and Option in models.py, respectively.
+- Changed BaseStrategy to BaseLeg in models.py.
+- Changed Strategy to StrategyLeg in models.py.
+- Removed premium field from Stock in models.py.
+- Moved n field to BaseLeg in models.py.
+
 ## 1.2.1 (2024-06-03)
 
 - Add 1 to `time_to_target` and `time_to_maturity` in `engine.py` to consider the target and expiration dates as  trading days in the calculations
-- Change Jupyter notebooks in the `examples` directory to utilize the `run_strategy()` function for performing options strategy calculations, instead of using the `StrategyEngine` class (deprecated) 
-- Correct the PoP Calculator notebook
-- Change the name of variable `project_target_ranges` in `models.py` and `engine.py` to `profit_target_ranges`
+- Changed Jupyter notebooks in the `examples` directory to utilize the `run_strategy()` function for performing options strategy calculations, instead of using the `StrategyEngine` class (deprecated) 
+- Corrected the PoP Calculator notebook
+- Changed the name of variable `project_target_ranges` in `models.py` and `engine.py` to `profit_target_ranges`
 
 ## 1.2.0 (2024-03-31)
 
-- Add functions to run engine.
+- Added functions to run engine.
 
 ## 1.1.0 (2024-03-24)
 

optionlab/models.py

@@ -75,7 +75,7 @@ class Option(BaseLeg):
         between this price and the current price is considered in
         the payoff calculation.
     "expiration" : string | int, optional.
-        Expiration date or days to maturity. If not defined, will use `target_date` 
+        Expiration date or days to maturity. If not defined, will use `target_date`
         or `days_to_target_date`.
     """
 
@@ -229,8 +229,7 @@ def validate_dates(self) -> "Inputs":
         expiration_dates = [
             strategy.expiration
             for strategy in self.strategy
-            if isinstance(strategy, Option)
-            and isinstance(strategy.expiration, dt.date)
+            if isinstance(strategy, Option) and isinstance(strategy.expiration, dt.date)
         ]
         if self.start_date and self.target_date:
             if any(