pdfsandwich 0.1.7 (Fri, 10 Aug 2018 22:25:43 +0200):
	new option -omp_thread_limit that controls number of threads for tesseract
	and prevents tesseract >=4 from freezing when multiple threads are used
	correction of several typos
	introduction of a global temporary directory that is only user readable

pdfsandwich 0.1.6 (Mon, 16 Jan 2017 15:51:50 -0500):
	new option -gray for grayscale output
	bug fix: for single page input pdf, output file renamed, not deleted
	argument -units PixelsPerInch added to convert
	command line argument order for convert changed according to recommendations
	OpenBSD support added for guessing number of processors

pdfsandwich 0.1.5 (Thu, 04 Aug 2016 14:31:28 +0200):
	gs mostly replaced by pdfinfo and pdfunite from poppler-utils
	new options -pdfinfo and -pdfunite for the respective binaries

pdfsandwich 0.1.4 (Thu, 09 Jul 2015 12:31:28 +0200):
	bugfix: keep original extension of input file
	display warning if tesseract does not support option -list_langs

pdfsandwich 0.1.3 (Sat, 09 Aug 2014 19:33:04 +0200):
	make the default preprocessing options more conservative
	add useful preprocessing options, such as -layout
	set page size of OCR'd pdf to original pdf page size
	allow manual output page size settings by option -pagesize
	option -list_langs to list languages available on the system

pdfsandwich 0.1.2 (Thu, 24 Jul 2014 14:32:50 +0200):
	bugfix in detection of tesseract >= 3.03

pdfsandwich 0.1.1 (Mon, 14 Jul 2014 21:33:33 +0200):
	option -enforcehocr2pdf added
	some bugfixes

pdfsandwich 0.1.0 (Sun, 13 Jul 2014 20:39:23 +0200):
	add support for tesseract 3.03 which makes hocr2pdf superfluous

pdfsandwich 0.0.9 (Mon, 19 Aug 2013 17:17:47 +0200):
	add preprocessing with unpaper
	option -debug for keeping temp files added

pdfsandwich 0.0.8 (Wed, 20 Feb 2013 13:59:26 -0500):
	option -hoo for passing hocr2pdf options added

pdfsandwich 0.0.7 (Tue, 13 Nov 2012 12:35:50 -0500):
	fixing bug for -rgb option (patch provided by James Cort)

pdfsandwich 0.0.6 (Thu, 20 Sep 2012 18:01:24 -0400):
	setting black and white to default again (switching option -blackwhite to -rgb)

pdfsandwich 0.0.5 (Mon, 17 Sep 2012 16:51:35 -0400):
	switch from cuneiform to tesseract,
	make rgb default (switching option -rgb to -blackwhite)

pdfsandwich 0.0.4 (Thu, 19 May 2011 12:09:45 -0400):
	bug fix in assigning multiple CPUs

pdfsandwich 0.0.3 (Sun, 24 Oct 2010 10:22:24 +0200):
	rgb bug fixed,
	number of pages to process restricts number of threads

pdfsandwich 0.0.2 (Mon, 26 Apr 2010 11:36:16 +0200):
	make install bug fixed

pdfsandwich 0.0.1 (Sun, 28 Mar 2010 16:57:33 +0200):
	Initial Release

