v1.6.0

Changelog for humans

https://docs.openfree.energy/en/stable/CHANGELOG.html#v1.6.0

All PRs included in this release:

• relaxing pydantic pin by @atravitz in #1387
• min pin kartograf by @atravitz in #1393
• remove openmm exclusion from docs by @atravitz in #1407
• Restraints API by @IAlibay in #1043
• Let mypy find unused ignores by @mattwthompson in #1423
• pin micromamba version to latest by @atravitz in #1348
• bumping python versions to 3.11-13 by @atravitz in #1373
• fix conda cron CI build by @atravitz in #1432
• clean up single file installer ci by @atravitz in #1434
• CI: update mypy ci by @atravitz in #1433
• Fix up collinearity tests [Issue #1419] by @IAlibay in #1436
• updating daily CI runners by @atravitz in #1435
• DSSP selection fixes (issue #1420) by @IAlibay in #1438
• Fix protein chain selection (Issue #1421) by @IAlibay in #1437
• Add slow markers on >60s restraint tests by @IAlibay in #1441
• add news item for openmm 8.3 support by @atravitz in #1446
• release prep 1.6.0 by @atravitz in #1447
• add a blurb for the 1.6.0 changelog by @atravitz in #1448

Full Changelog: v1.5.0...v1.6.0