fix: update coverage badge URLs in README.md and index.rst for consistency

Author: phillipus85

CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.6.21][0.6.21] - 2026-02-20
+
+### Fixed
+
+- Removed license classifier from pyproject.toml to comply with PEP 639 (license expression supersedes classifiers)
+- Removed duplicate license field from setup.py to avoid conflict with pyproject.toml
+- Updated coverage badge format to new codecov.io URL structure
+
 ## [0.6.19][0.6.19] - 2026-02-20
 
 ### Fixed
@@ -710,6 +718,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 Experimentation phase before formal semantic versioning, establishing core dimensional analysis concepts and data structures.
 
+[0.6.21]: https://github.com/DASA-Design/PyDASA/compare/v0.6.19...v0.6.21
 [0.6.19]: https://github.com/DASA-Design/PyDASA/compare/v0.6.18...v0.6.19
 [0.6.18]: https://github.com/DASA-Design/PyDASA/compare/v0.6.15...v0.6.18
 [0.6.15]: https://github.com/DASA-Design/PyDASA/compare/v0.6.13...v0.6.15

README.md

@@ -2,7 +2,7 @@
 
 <div align="center">
 
-[![PyPI](https://img.shields.io/pypi/v/pydasa?cache=none)](https://pypi.org/project/pydasa/) [![Python Version](https://img.shields.io/pypi/pyversions/pydasa)](https://pypi.org/project/pydasa/) [![License](https://img.shields.io/github/license/DASA-Design/PyDASA)](https://github.com/DASA-Design/PyDASA/blob/main/LICENSE) [![Documentation Status](https://readthedocs.org/projects/pydasa/badge/?version=latest)](https://pydasa.readthedocs.io) [![Coverage](https://codecov.io/gh/DASA-Design/PyDASA/branch/main/graph/badge.svg)](https://codecov.io/gh/DASA-Design/PyDASA)
+[![PyPI](https://img.shields.io/pypi/v/pydasa?cache=none)](https://pypi.org/project/pydasa/) [![Python Version](https://img.shields.io/pypi/pyversions/pydasa)](https://pypi.org/project/pydasa/) [![License](https://img.shields.io/github/license/DASA-Design/PyDASA)](https://github.com/DASA-Design/PyDASA/blob/main/LICENSE) [![Documentation Status](https://readthedocs.org/projects/pydasa/badge/?version=latest)](https://pydasa.readthedocs.io) [![codecov](https://codecov.io/gh/DASA-Design/PyDASA/graph/badge.svg)](https://codecov.io/gh/DASA-Design/PyDASA)
 
 </div>
 

docs/source/index.rst

@@ -22,7 +22,7 @@ PyDASA
    :target: https://pydasa.readthedocs.io
    :alt: Documentation Status
 
-.. |coverage| image:: https://codecov.io/gh/DASA-Design/PyDASA/branch/main/graph/badge.svg
+.. |coverage| image:: https://codecov.io/gh/DASA-Design/PyDASA/graph/badge.svg
    :target: https://codecov.io/gh/DASA-Design/PyDASA
    :alt: Coverage