Scarf

CHANGELOG:

**New features**

Added new vignettes for multiple modalities. merging datasets and data projection

**Improvements**

Existing vignettes updated.
Improvements in `H5adReader`
Fixes in requirements due to jinja3 update that was breaking RTD builds
Fixes in `drop` in Metadata
Improvements in `show_zarr_tree` in DataStore that allow printing tree from any node and to any depth
Improvements in `plot_layout` in DataStore that allow shuffling and sorting of datapoints

Exposed heatmap kwargs `plot_heatmap`

**Improvements**
Improved support for prenormalized values in `find_markers_by_rank`
`show_zarr_tree` now has a maximum depth of 2