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.

conda/meta.yaml

@@ -1,5 +1,5 @@
 {% set name = "ferro-ta" %}
-{% set version = "1.1.2" %}
+{% set version = "1.1.3" %}
 
 package:
   name: {{ name|lower }}