Download Graphviz 4.0.0

Changed
• Breaking: The mark field of the Agnodeinfo_t struct is now a size_t instead of a char.
• Breaking: The unused shape_t struct has been removed from the public header types.h
• Breaking: The Agiodisc_t struct member putstr that was previously an fputs analog is replaced by printf that is required to behave similar to fprintf.
• the mingle, diffimg, gvmap, and edgepaint binaries are now included in the CMake build system
• the gvmap.sh and vimdot scripts are now installed by the CMake build system on operating systems other than Windows
• a brief note about the (previously undocumented) behavior of Graphviz when sent SIGUSR1 is now mentioned in the man page
• build system support for dotty, lefty, and lneato has been removed
• the CMake build system now includes the DevIL, GDK, GhostScript, GTK, LASi, Poppler, Quartz, Rsvg, Visio, WebP, and Xlib plugins
• awk is no longer a build-time dependency #2118

Fixed
• agcanon, agcanonStr, and agwrite now return error values on memory allocation failures instead of crashing or corrupting data
• gvpr programs can now pass dynamically allocated arguments to user-defined functions without corrupting their content. Some cases of this were a regression in Graphviz 2.46.0. Other cases have existed since the first release of gvpr. #2185
• spurious "no hard-coded metrics" warnings on labels with empty lines #2179
• fixed corruption of user shape characteristics during EPSF initialization
• output formats canon, dot, and xdot are not completely faithful to input #2184
• gvpr index function produces wrong results #2211. This was a regression in Graphviz 2.47.0.
• Error on more than 128 cluster subgraphs #2080
• dot2gxl no longer crashes on input <node id=""> #2092
• remove itos #2229
• sfdp no longer crashes on certain graphs with cycles. #2225
• gml2gv does not handle integer penwidth correctly #1871

Removed
• the glitz plugin has been removed. The plugin was never complete and distributions no longer ship glitz.