plot_saturation: Plot sequencing saturation
In hesselberthlab/scrunchy: Single Cell Reconstruction of Functional Heterogeneity

Reads per cell are downsampled and the sequencing saturation is computed. Sequencing saturation is defined as 1 - UMIs / total reads.

1 2	plot_saturation(molecules, bcs_to_use = NULL, proportions = seq(0, 1, by = 0.1), return_data = FALSE)

`molecules`	path molecule.tsv.gz flatfile produced by scrunchy pipeline or molecule_df data.frame
`bcs_to_use`	character vector of barcode sequences to use for computing sequencing saturation. Defaults to use all barcodes.
`proportions`	vector of proportions between 0 and 1 to downsample reads (defaults to `seq(0, 1, by = 0.1)`)
`return_data`	if TRUE return plotting data instead of plotting distribution