Changes in version 2019-12-20                      

    o   Updated type checking to accomodate new `matrix` inheritance.

                     Changes in version 2017-11-19                      

    o   Re-added functions to assign based on column and row names.

                     Changes in version 2017-11-08                      

    o   Memory leak problem solved.

                     Changes in version 2016-09-21                      

    o   Fixed a bug with handling raw bytes. Now it is possible to
	use big.matrix to store arbitrary R object (using serialization).
	If you want to make sure that bigmemory big.matrix handles raw
	data, add "bigmemory (>=4.5.21)" to the Depends stanza in 
	the Description.

                     Changes in version 2014-04-15                      

    o   Enabled use of Rcpp package to simply code and create
	smaller barrier to adding additional extensions.

    o   Added new method to big.matrix objects, allocation_size, to
	easily check the size of the object in memory.

    o   Float type matrices have now been added to enable single
	precision analytics.

                     Changes in version 2013-03-09                      

    o   We missed a NEWS entry.  Windows support is temporarily suspended
	due to issues with the Boost headers.

    o   We now depend on bigmemory.sri (a trivial dependency relating to
	our big.matrix descriptors) and new package BH (for Boost headers).

                     Changes in version 2011-06-29                      

    o   Modified deepcopy() with C code (thanks to Zarrar for this)

    o   Added -fpermissive to possibly address a compilation issue
	in Linux

    o   Added -lm to address a linking problem with math.h

    o   Fixed a problem with reading all 0's in a column in
	read.big.matrix()

    o   We note that there may be an inconsistency with read.big.matrix()
	and write.big.matrix() that needs to be addressed.

                     Changes in version 2010-10-30                      

    o   Modified configure to handle a Solaris problem.

    o   Added definition of __C99FEATURES__ to isna.hpp; hopefully
	won't break anything.

                     Changes in version 2010-05-16                      

    o   Set proper default value op='AND' for mwhich()

                     Changes in version 2010-05-08                      

    o   The configuration process has been streamlined to avoid
	warnings and allow for support of Sun Studio compiler
	on Linux.

                     Changes in version 2010-05-06                      

    o   bigmemory >= 2.2.0 is accompanied by sister packages
	biganalytics and bigtabulate; mutexes (locking) are
	abstracted to package synchronicity, available now
	on R-Forge and soon to be uploaded to CRAN.  Package
	bigalgebra is on R-Forge as a beta version while we
	sort through the range of library configuration options.