0.3.2 Compatibility with Pint 0.25 and Python 3.14

What's Changed

• Remove unused exclusions by @mikemhenry in #123
• Update docexamples for OpenMM 8.3 by @mattwthompson in #129
• Declare Python dependencies by @mattwthompson in #133
• Add some NMR-related units by @mattwthompson in #137
• Support PEP 639 and format pyproject.toml by @mattwthompson in #138
• Fix package data by @mattwthompson in #143
• Allow OpenMM 8 + Python 3.13 in CI by @mattwthompson in #147
• Switch version handling from versioningit to setuptools-scm by @mattwthompson in #148
• Test on Python 3.14 by @mattwthompson in #149
• Fix docs by @mattwthompson in #146
• Test with Pint 0.25 by @mattwthompson in #150
• Draft 0.4.0 release notes by @mattwthompson in #153
• Duplicate docs-only dependencies by @mattwthompson in #161

Full Changelog: 0.3.1...0.4.0