Changes in v2.15
    * Added option to control limits of density estimate in hdr.boxplot.2d()

Changes in v2.14
    * Updated references for hdrbw().

Changes in v2.13
	* Added color options to hdr.boxplot.2d().

Changes in v2.12
	* Modified hdr(), hdr.boxplot() and hdr.den() to allow a Box-Cox transformation to be 
	  used when computing the density. This allows the density estimate to be non-zero only 
	  on the positive real line.
	
Changes in v2.11
    * Added hdrbw() from Matt Wand to compute better bandwidths for hdr(), hdr.den() and hdr.boxplot().
    * Fixed a few bugs in the help files.

Changes in v2.10

    * Bug fix in hdr.boxplot.2d(). The show.points option was not working.

Changes in v2.09

    * Bug fix: the a bandwidth in cde() when fw=TRUE and use.locfit=TRUE was twice as large as it
      should have been.

Changes in v2.08

    * Bug fix in hdr.boxplot.2d(). It would sometimes plot outliers on a separate plot.
    * New argument to hdr.boxplot.2d() to allow the density to be estimated using the kde() function 
	  from the ks package.