Changes in version 1.6.0                        

    o   Switched emptyDrops() to use Boost's discrete_distribution for
	weighted sampling.  This results in some minor stochastic
	changes to the Monte Carlo p-values. Automatically round
	non-integer count matrices.

                        Changes in version 1.4.0                        

    o   Removed read10xMatrix().

    o   Supported CellRanger v3 output files in read10xMolInfo(),
	read10xCounts(), write10xCounts().

    o   Modified barcodeRanks() to return a DataFrame with
	knee/inflection estimates in metadata.

    o   Slight change to random number generation in emptyDrops() to be
	agnostic to number of cores.

                        Changes in version 1.2.0                        

    o   Added removeSwappedDrops() for removing swapping in other types
	of droplet-based data.

    o   Added alpha= argument to testEmptyDrops() to support
	overdispersion during sampling. Returned arguments and
	estimates in metadata of testEmptyDrops(), emptyDrops().

    o   Added encodeSequences() for convenient 2-bit encoding of
	sequences.

    o   Added get10xMolInfoStats() function to compute per-cell
	statistics from a molecule info file.

    o   Deprecated read10xMatrix(), as it does not add much practical
	value over Matrix::readMM().

    o   Support the 10X sparse HDF5 format in read10xCounts().

    o   Support the 10X sparse HDF5 format in write10xCounts().

                        Changes in version 1.0.0                        

    o   
	New package DropletUtils, for handling droplet-based
	single-cell RNA sequencing data.