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# Changelog for Loupe Cell Browser 3.1.x (Spring/Summer 2019)

### General Improvements

• Fixes Split View bugs when importing custom projections.
• Fixes default name of screenshot export.
• Correctly update filter UI elements after switching between filters.

### ATAC Improvements

• Speeds up display of motif z-scores.
• Fixes case where fragments file may be incorrectly reported as not pertaining to a dataset.
• Avoids hanging when opening a file saved with a feature list containing both a motif and nearby gene.

### Gene Expression Improvements

• Support antibody-only datasets.
• Render UMAP projections computed by the Cell Ranger 3.1 pipeline.
• Bugfix: fix UMI Count overcount on datasets generated with Cell Ranger 3.0.
• Share heatmap filtering options with the data table.
• Add ability to drive the differential expression heatmap with a feature list.
• Correctly size the differential expression heatmap when the bottom panel is resized.
• Fix case where selecting Total UMI Count for multi-species datasets could trigger a crash.

## New Features in 3.1.0

### Filtering

Filter for cell types by creating complex boolean filters. For example, to filter for mature B Cells, you could create the statement (CD79A OR CD79B) AND TCL1A = 0. Please refer to the filtering section in the tutorial for further guidance on how to use this feature.

### Projection Import

Import data from your favorite projection methods using a simple CSV format. For more details on the file format, please check the projections section of the interoperability documentation

### Multi-Windows

You can now have multiple windows open simultaneously. This will allow you to compare aspects of the same dataset side by side or keep concurrent analyses open at one time. To create new windows, you can click on File > New Window within Loupe Cell Browser or double click on a cloupe file.

### Feature Expression Coloring

We've provided a variety of alternate colormaps from which to choose.You can also manually adjust the endpoints of the colorscale. View the alternate colorscales and manual ranges documentation for more details.

### Projection Settings

Exports of the barcode plot will now include the relevant legend (categories or gene/feature expression). Barcode plot point size will now scale with zoom level. There is also an option to manually increase or decrease the marker size. To find out more about changing marker size, read the modifying marker size documentation.