Changes in version 2.9                         

    o   Fixed a bug in the C code of Graphviz which manifests itself
	when the following options are given to GCC "-Wformat
	-Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2",
	this is the case for Ubuntu 12.04.  Reported by Vladimir Zhurov
	<vzhurov2@uwo.ca>, Venkat Seshan <veseshan@gmail.com> and Chong
	Tang <tangc3@unr.edu>.

                         Changes in version 2.7                         

    o   Fixed include statements in Graphviz code.

                         Changes in version 2.5                         

    o   Expose mai argument in plot,Ragraph-method.

    o   Changed the LICENSE to EPL.

    o   Fixed some wrong text in the DESCRIPTION file.

    o   Fixed pieGylph to adress the issue of warning messages about
	rep(NULL) (reported by Cristobal Fresno Rodríguez
	<Cristobalfresno@gmail.com>).

    o   Updated Imports, Depends, NAMESPACE as per R CMD check
	requirements.

    o   Fixing issue with the lt~obsolete.m4 file(s) in Graphviz; R CMD
	check was issueing a warning.

    o   Moved vignettes from inst/doc to vignettes directory.

                         Changes in version 2.4                         

    o   Backported the pieGylph fix to the release branch.

                         Changes in version 2.3                         

    o   Fixing bug in Graphviz on OpenBSD regarding sincos (Thanks to
	Rainer Hurling).

    o   Now using path.expand to fix tilde-expansion.

    o   We no longer include <R_ext/RConverters.h>; which seemingly was
	not needed (Thanks to Brian D. Ripley).

    o   Fix handling of fontsize attrib for nodes and edges (seems it
	has been broken at least since 2006).

                         Changes in version 2.2                         

    o   Plotting now longer accepts border.lwd or border.col.  Instead
	of border.col use color.  Instead of border.lwd, you need to
	use the renderGraph/layoutGraph interface.  This fixes a long
	standing bug where Rgraphviz writes illegal dot files.
	unitTest has been added.

    o   bugfix to renderNodes (used in renderGraph) for nodes with
	shape = "triangle".  It now works.

    o   bugfix to renderNodes (used in renderGraph) for using
	node-specific lwd and shapes either "triangle", "ellipse" or
	"circle".  It now works.

                         Changes in version 2.1                         

    o   Rgraphviz now requires Graphviz >= 2.16.

    o   Added graphvizCapabilities() that reports the capabilities of
	Graphviz.  This requires Graphviz >= 2.28 and returns NULL if
	the Rgraphviz installation does not support it.

    o   Rgraphviz now comes bundled with Graphviz 2.28, greatly
	simplifying installation.

    o   Numerous bugfixes for bugs introduced in the 2.x.x versions.