v1.0.6 Improve code to meet Python conventions.

• Enhanced code to adhere to Python coding conventions and standards.
• Migrated project packaging from setuptools and setup.py to pyproject.toml and poetry for improved dependency management.
• Transitioned unit tests from unittest to pytest for enhanced testing capabilities and flexibility.

v1.0.3 Return type changed to object

Return type changed to object.

v0.9.1 Tests added

Tests added. Changes in some files and function names.