WHAT'S NEW with HF-Lab ?					-jpb
   
01/16/2015 ----------------------------------------- HF-Lab 095
- modify png_io.c to work with current PNGLIB
  now compiles OK using gcc 4.9.2 in Cygwin64 under windows 7 on x64 cpu

12/23/2014 ----------------------------------------- HF-Lab 094 
- remove obsolete PNG/ZLIB src directories
  it now compiles OK on Debian x64 with current libpng-dev installed
- change default "appendnum" setting to FALSE, so a sequential number 
  is not appended to your saved filename (unless you 'set appendnum TRUE')

09/25/2013 ----------------------------------------- HF-Lab 093b
- fix makefile in PNG dir (pnglib12 -> pnglib), to fix 'make hlu' on WinXP cygwin (gcc 3.4.4)
- add 'rhistogram' to generate radial profile (useful after FFT, cmag, peak, log)
- more fixes to work on cygwin (WinXP) gcc 4.5.3, also Debian (R-Pi) gcc 4.6.3
	 
09/13/2012 ----------------------------------------- HF-Lab 093

- option to 'make hlu' for no interactive graphics (more compatible)
- fix for batch mode (remove CR/LF characters from end of line)
- fix for library compatibility (getline() naming collision)
- update help file text
- fixed memory leaks in png_read, png_write, h_fillbn (thanks Valgrind!)
- compiles on cygwin (WinXP), gcc 3.4.4
- compiles on Debian 2.6.32 i686, gcc 4.4.5

04/27/07 ------------------------------------------- HF-Lab 092

- added nrm2 operator (multiply by one scale factor so max = 1.0)
- added REPEAT operator (iterate rest of command line <n> times)
- added "filenum" variable to label filenames w/auto-inc serial #

04/26/07 ------------------------------------------- HF-Lab 091 beta

-memory leak fix in cplx.c: c_real()  (thanks Ray Gardener)
-updated zlib/ to zlib 1.2.3 (version of July 18 2005)
-updated png/ to libpng 1.2.16 (version of January 31 2007)
-Note that grx246 must be patched to compile under GCC 4.1
as described here: http://www.delorie.com/djgpp/bugs/show.cgi?000378
-With above grx246 patch, confirmed compile with DJGPP, GCC 4.1.2

07/26/97 ------------------------------------------- HF-Lab 090 beta

-improved 'cwarp' to take control and source HFs of different sizes.

07/24/97 ------------------------------------------- HF-Lab 089 beta

-added patch to hf_io.c to enable reading of .OCT format files
 (generated by the Octave [Matlab-alike] matrix program, and HF-Lab).
 Thanks to Robert Bertram <robertrb@umich.edu>  for the patch.

07/13/97 ------------------------------------------- HF-Lab 088 beta

-added patch to x_iface.c to enable display using High- and TrueColor
 visuals in X Windows. Thanks for the patch from Michael Lamertz 
 mlamertz@odars.de |  http://homepages.odars.de/~maxwell

01/18/97 ------------------------------------------- HF-Lab 086 beta

-hshift operator added, enabling an interesting procedural effect

11/29/96 ------------------------------------------- HF-Lab 085 beta

-DEC Alpha patches from Neil Schellenberger <nschelle@crosskeys.com>

-Upgraded png libraries to PNG 0.89c and ZLIB 1.0.4 

-Added "tic" and "toc" commands for timing benchmarks

5/6/96 -------------------------------------------- HF-Lab 0.84 beta 

-PNG format writing (greyscale, 1..16 significant bits) and reading
	(greyscale, RGB, and palette, although not with alpha)

-RAW triangle format writing (ASCII). Terribly inefficient in disk space,
	but does permit subsequent export to DXF etc.

-POT format now also has variable number of significant bits (but PNG
	files are always smaller)