SpiceyPy 6.0.1

[6.0.1] - 2025-06-24

Backport release of various small fixes and typo corrections

Added

• python 3.13 builds
• missing exceptions from cspice #494
• new required readings docs #489

Removed

• cirrus ci was removed
• gitter chat info

Changed

• Added units to many parameter descriptions in function docstrings to address #350
• updated various aspects of ci builds
• copyright date ranges updated to 2025
• moved naif doc urls to versioned

Fixed

• various readthedocs and docs issues
• cylsph was fixed as it was calling the wrong cspice function #496
• various typos