0.5.1

What's Changed

• Use Sage 2.3.0 in most tests by @mattwthompson in #1412
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #1415
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #1419
• Build(deps): Bump prefix-dev/setup-pixi from 0.9.3 to 0.9.4 by @dependabot[bot] in #1420
• Fix edge case with combination by @mattwthompson in #1418
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #1421
• Turn on import sorting by @mattwthompson in #1424
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #1425
• Create OpenMM particles even with no non-bonded handlers by @mattwthompson in #1431
• Clear caches when re-creating from new force fields by @mattwthompson in #1435
• Fix vsite z-coordinate computation by @lilyminium in #1440
• Ensure improper torsions are added to OpenMM, even with no proper torsions by @mattwthompson in #1442
• Use custom 1-4 scaling factors on interactions involving virtual sites by @mattwthompson in #1437
• Use set when storing 1-4 pairs in OpenMM export by @mattwthompson in #1446
• Release 0.5.1 by @mattwthompson in #1449

Full Changelog: v0.5.0...v0.5.1