pfstools 1.5 <16.08.2006>
	 * All octave IO API updated: named pipes replaced with popen, which is less
	 problematic under cygwin
	 
	 * bugfix: color conversion matrixes (XYZ->RGB) lead to inaccuracies for 16bit images.
	matrix values have been adjusted to maximize precision. (2006-08-08)
	 * added: initial support for alpha channels in Tiff files (thanks to Pablo d'Angelo, http://hugin.sf.net). images can be loaded, but alpha channels are ignored.
	 * added: disable-* options to configure script to disable build of certain features
	 * added: pfsview - displayed image can be copied to clipboard
	 * added: pfscut - now it is possible to specify u-l, b-r coordinates
	 * updated: pfs specification

pfstools 1.4	 
 	 * added: initial support for camera RAW files via dcraw wrapper pfsindcraw
	   2006-03-17  Grzegorz Krawczyk  <krawczyk@mpi-sb.mpg.de>
	 * pfsview: now possible to choose color space for the pixel under the cursor
	 * pfsview: added new color clipping method: Keep brightness and hue
	 * improved QT autoconf check, added --with-qtinclude, --with-qtlibs
	 * fixed typos in documentation and pfs spec (thanks to Adam Buchbinder)
	 * pfs.cpp and colorspace.cpp compile under MS Visual C++
	 * pfsopen.m can accept file descriptor of an opened file now
pfstools 1.3
	 * added: pfsinimgmagick/pfsoutimgmagick to read and write images using ImageMagick++ library
	 * added: pfsinjpeghdr / pfsoutjpeghdr for JPEG-HDR format
	 * added: pfsstat - hdr image statistic
	 * bug fixed: loading of images in pfsview should be 30-60% faster
	 * configure.ac - improved QT config script
	 ** use pkgconfig to set up QT flags, if possible
	 ** verify MOC
	 ** simpler script to set up QT flags
	 * libpfs uses map instead of hash_map - for better compatibility
	 * added: pfsview - better handling of negative values
	 ** mark negative with red now works
	 ** negative values in color images are now recognized
	 * pv renamed to pfsv to avoid the conflict with the pipe viewer 'pv'

pfstools 1.2.1 <19.07.2005>
         * bug fixed: seg fault in pfsoutexr and pfsabsolute
	 * bug fixed: pfsin uses bash as a shell
	 
pfstools 1.2 <15.06.2005>
	 pfs library: extended api:
	 * pckconfig file renamed from pfs-1.0.pc to pfs.pc
	 * iterator over all tags in TagContainer
	 * new iterator over all channels in Frame
	 * FrameFileIterator can be used together with getopt and getopt_long
	 pfsinexr, pfsoutexr: can read/write all channels and all tags/attributes
	 added: pfsinpfm, pfsoutpfm - to read/write PFM HDR images
	 pfsin*,pfsout*: now use 'LUMINANCE' tag to keep the track of the type of
	                 intensities stored in the pfs stream:
			 relative (linear) or display (gamma corrected)
	 pfssize: new arguments --minx, --miny, --maxx and --maxy
	 pfs library: sRGB color space scaled to keep channel values
	   within 0-1 range (to be compliant with the other parts of pfstools)
	 Added new filters
	 * pfscut - crops images
	 * pfscat - concatenates images or animations
	 * pfspad - add border to images or animations
	 * pfsrotate - rotates images by 90deg
	 * pfsflip - flips images
	 * pfsabsolute - calibrates images to absolute units (Y in cd/m^2)
	 Support for LUMINANCE tag (recognized by some pfsin* and pfsout* commands)
	 
pfstools 1.1 <29.01.2005>
	pfsview: minimum and maximum of the luminance window can be
	  dragged (previously only entire window could be dragged)
10.01.2004
	added: support for gcc 3.4.2 (thanks to Fabio Mierlo)
15.12.2004
        added: pfspanoramic
05.12.2004
	pfsview: optimized mapping function for faster display and
	better responsiveness
	pfsview: added visualization of negative values
	pfsview: added option to switch off NaN and Inf marking
	pfssize: fixed problem with boundary conditions
	pfsview: shortcuts added
24.11.2004
	added: octave script: pfssize
	transformColorSpace does graph traverse to find conversion
	between any color spaces
18.11.2004
	pfsview: can save visible window as .png image
17.11.2004
	pfsextractchannels: added
	Updated man pages
02.11.2004
	pfsview: it is now possible to move back and forth between the frames
	pfsin*: all those commands now add a tag FILE_NAME 	
27.10.2004
	Rewritten and much improved pfssize. Enlarging of images is now
	possible. pfssize rewrites tags to the resized stream.
