chore: update ferro-ta version to 1.1.3

- Bumped version numbers across Cargo.toml, Cargo.lock, pyproject.toml, and conda/meta.yaml to 1.1.3.
- Added new features including American option pricing, digital options, extended Greeks, and historical volatility estimators.
- Enhanced documentation and tests for new functionalities.
- Updated CHANGELOG.md to reflect changes for version 1.1.3.

src/options/pricing.rs

@@ -89,6 +89,29 @@ pub fn bsm_price_batch<'py>(
     Ok(out.into_pyarray(py))
 }
 
+#[pyfunction]
+#[pyo3(signature = (call_price, put_price, spot, strike, rate, time_to_expiry, carry = 0.0))]
+#[allow(clippy::too_many_arguments)]
+pub fn put_call_parity_deviation(
+    call_price: f64,
+    put_price: f64,
+    spot: f64,
+    strike: f64,
+    rate: f64,
+    time_to_expiry: f64,
+    carry: f64,
+) -> PyResult<f64> {
+    Ok(ferro_ta_core::options::pricing::put_call_parity_deviation(
+        call_price,
+        put_price,
+        spot,
+        strike,
+        rate,
+        carry,
+        time_to_expiry,
+    ))
+}
+
 #[pyfunction]
 #[pyo3(signature = (forward, strike, rate, time_to_expiry, volatility, option_type = "call"))]
 pub fn black76_price_batch<'py>(