What's Changed
* Pin sphinx theme by jl-wynen in https://github.com/scipp/scippneutron/pull/422
* Bump pypa/gh-action-pypi-publish from 1.6.4 to 1.7.1 by dependabot in https://github.com/scipp/scippneutron/pull/423
* Set unit=None in conversion from mantid.MaskWorkspace by SimonHeybrock in https://github.com/scipp/scippneutron/pull/424
* Bump pypa/gh-action-pypi-publish from 1.7.1 to 1.8.1 by dependabot in https://github.com/scipp/scippneutron/pull/425
* Compute hkl by jl-wynen in https://github.com/scipp/scippneutron/pull/427
* Use sc.spatial.rotations instead of matrices by jl-wynen in https://github.com/scipp/scippneutron/pull/428
* Switch to Black by jl-wynen in https://github.com/scipp/scippneutron/pull/429
* Bump pypa/gh-action-pypi-publish from 1.8.1 to 1.8.3 by dependabot in https://github.com/scipp/scippneutron/pull/430
* Bump pypa/gh-action-pypi-publish from 1.8.3 to 1.8.4 by dependabot in https://github.com/scipp/scippneutron/pull/431
* Ignore license link in linkcheck by jl-wynen in https://github.com/scipp/scippneutron/pull/432
* Bump pypa/gh-action-pypi-publish from 1.8.4 to 1.8.5 by dependabot in https://github.com/scipp/scippneutron/pull/433
* Scipp==23.03.2, h5py>3.2, mantid==6.6 by nvaytet in https://github.com/scipp/scippneutron/pull/434
* Prepare release notes for 23.04 by nvaytet in https://github.com/scipp/scippneutron/pull/435
**Full Changelog**: https://github.com/scipp/scippneutron/compare/23.03.0...23.04.0