Patch Changes
- Update showcase page of docs. (`docs`) ([1939](https://github.com/vitessce/vitessce/pull/1939))
- Add obsSets to tooltip for Segmetations (`vitessce/spatial-beta`) ([1936](https://github.com/vitessce/vitessce/pull/1936))
- Added help text overlay for the views (`vitessce/scatterplot-embedding`, `vitessce/scatterplot-gating`, `vitessce/statistical-plots`, `vitessce/genomic-profiles`, `vitessce/layer-controller`, `vitessce/obs-sets-manager`, `vitessce/feature-list`, `vitessce/description`, `vitessce/constants-internal`, `vitessce/heatmap`, `vitessce/spatial`, `vitessce/status`, `vitessce/vit-s`) ([1911](https://github.com/vitessce/vitessce/pull/1911))