pytrip/pytrip: 3.6.0

What's Changed gitignore for jetbrains by @grzanka in https://github.com/pytrip/pytrip/pull/626 Fix broken submodule by @grzanka in https://github.com/pytrip/pytrip/pull/631 add paramiko as extra dep by @michal367 in https://github.com/pytrip/pytrip/pull/628 add gitpod integration by @grzanka in https://github.com/pytrip/pytrip/pull/633 Add str methods for cube types by @Yoanka in https://github.com/pytrip/pytrip/pull/636 Bump actions/setup-python from 2.2.2 to 2.3.0 by @dependabot in https://github.com/pytrip/pytrip/pull/641 Improve executor messages by @michal367 in https://github.com/pytrip/pytrip/pull/640 Python 3.10 support by @grzanka in https://github.com/pytrip/pytrip/pull/642 improved conditionals for package upload by @grzanka in https://github.com/pytrip/pytrip/pull/644 New Contributors @michal367 made their first contribution in https://github.com/pytrip/pytrip/pull/628 @dependabot made their first contribution in https://github.com/pytrip/pytrip/pull/641 Full Changelog: https://github.com/pytrip/pytrip/compare/v3.5.0...v3.6.