Changes
* Updated Python versions to 3.11-3.13 (https://github.com/Electrostatics/pdb2pqr/issues/414)
* Linting/formatting changes (https://github.com/Electrostatics/pdb2pqr/issues/409, https://github.com/Electrostatics/pdb2pqr/issues/411, https://github.com/Electrostatics/pdb2pqr/issues/412)
* Simplified Python build system and test matrix (https://github.com/Electrostatics/pdb2pqr/issues/404, https://github.com/Electrostatics/pdb2pqr/issues/420)
* Improved test suite (https://github.com/Electrostatics/pdb2pqr/pull/379, https://github.com/Electrostatics/pdb2pqr/pull/382, https://github.com/Electrostatics/pdb2pqr/pull/410, https://github.com/Electrostatics/pdb2pqr/pull/414)
* Updated Sphinx versions (https://github.com/Electrostatics/pdb2pqr/issues/384)
Fixes
* Removed unnecessary binary (https://github.com/Electrostatics/pdb2pqr/pull/418)
* Fix module shadowing (https://github.com/Electrostatics/pdb2pqr/pull/402)
* Fixed editable installs (https://github.com/Electrostatics/pdb2pqr/pull/372)
* Documentation updates (https://github.com/Electrostatics/pdb2pqr/pull/364, https://github.com/Electrostatics/pdb2pqr/pull/366)