Version 8.63.0 main changes:
* Approximately 238 bugs have been fixed since version 8.62.0. 
	Of particular note are robustness and performance improvements with large
	files, invalid PDF, and font handling.
* The major new feature of this release is multithreaded rendering. This can
	be requested by passing -dNumRenderingThreads=n on the command line. The
	input document is first parsed, and then each page is split into n bands
	which are rendered concurrently. This can provide a significant reduction
	in processing time on multi-core systems.
* Images are now always interpolated in their source colorspace. This improves
	correctness for XPS documents and avoids bypassing the custom color
	management callbacks for interpolated images. Interpolation and color
	management are both expensive operations, so this affects performance with
	large images. The effect can be positive or negative depending on the file
	and the target resolution. If performance is a problem, we suggest running
	with -dNOINTERPOLATION.

* Support for OpenPrinting Vector devices has been upgraded to version 1.0.

* There are two new devices in this release, both experimental. Behdad Esfahbod
	has contributed a cairo output device which uses the cairo graphics library
	to generate PDF, SVG, EPS, or PNG files, based on the requested filename
	extension. The svgwrite device directly outputs Scalable Vector Graphics,
	the W3C XML vector graphics format. Both support only vector art at this
	point; text and images will not be represented efficiently.

* 3 incompatible changes in this release:
	- The maximum number of color components has been reduced to 8 (from 252) 
	as a performance improvement. Eight is the largest number commonly used and
	the largest number for which we support continuous tone images. Users with
	special needs can restore the previous behavior by setting the
	GS_CLIENT_COLOR_MAX_COMPONENTS preprocessor symbol to the required number
	of components at compile time.

	- The -Z: debugging option now uses 'realtime' instead of 'usertime' when
	reporting timing information on unix-like systems. This has always been the
	case on windows-like systems.

	- Obsolete makefiles for the DesqView environment have been removed.

Version 8.62.0 main changes:

* numerous bug fixes  and improvements:
	- COMPILE_INIT=1 fixes from release 8.61
	- tiffsep device can use more than 8 colorants
	- faster shadings, overprinting and transparency
	- fix some compatibility issues in PDF/A produced with pdfwrite device
* fixed bug #20270 by patching src/gdevxini.c to avoid cropping issue in gv

Version 8.61.0 main changes:

* numerous bug fixed
* use of x11alpha for default driver if X11 is available, falling back to
  bbox otherwise

Version 8.60.0 main changes:

* merge of drivers and other patches from ESP Ghostscript
* include the cups driver from ESP Ghostscript
* The X11 device is now modularized on Linux and Solaris systems 
  when built with GNU ld
* include numerous important bug fixes over the previous stable 
  version, as well as improvements to performance, memory footprint, 
  shading and image handling
* use of bbox for default driver output, no more the x11 one.

Version 8.57.0 main changes:

* bug fixes, performance and quality improvements in the areas of
  patterns, shading and image filtering
* implementation of the Well Tempered Screening algorithm in an 
  output device, using Graeme Gill's IMDI library for efficient 
  color mapping.

Version 8.56.0 main changes:

* include all bugfixes and changes from GPL version 8.56
* change the version numbering convention, add a patch number
* add DMP printer drivers and ppds, thanks to Sahaya Darcius
