update changelog

Merge pull request #97 from stevenhua0320/fix-everything

fix: fix spelling and changelog, pre-commit auto-fix

Merge pull request #91 from diffpy/docs/add-agents-md

docs: add AGENTS.md with contribution guidelines for AI agents

Merge pull request #81 from cadenmyers13/changelog-render

fix: Changelog rendering

update changelog

Merge pull request #59 from Tieqiong/wheel

update wheel setup