+TODO
+ Read PlotFile's.
+
+ Add help button onto dialog's for reconstruction & projections.
+ Consider use of wxWindows help file classes.
+
+ Consider changing POL to to read tag tokens.
+
+ Consider being able to write Phantom files as text and view as
+ text in ctsim.
+
+3.0alpha1 - Released 12/30/00
+
+ * Added PlotFile class to system, used by if2 and ctsim for row
+ and column plots and comparison plots
+
+ * ctsim: Added image comparison statistics and image subtraction
+
+ * ctsim: Added plotting of rows & columns with y-axis scaling
+
+ * ctsim: Added row and column plot comparisons between two image
+ files.
+
+ * mathfuncs.cpp: Reworked statistics algorithm to share between
+ imagefile and plotfile classes.
+
+ * imagefile.cpp: Fixed scaling bug when rasterizing Phantom with
+ nsamples > 2. Added generic mage math functions, moved from
+ if1.cpp and if2.cpp to imagefile.cpp
+
+ * if1: Updated to handle error conditions, such as sqrt of a
+ negative number.
+
+ * if2: Updated to output plot files and use new ImageFile class
+ math functions
+
+ * if1: Updated to use new ImageFile class math functions
+
+ * ezplot: Reworked to better store colors/linestyles/symbols with
+ individual curves. Improved display of labels and ticks. Updated
+ to use POL class member variable. Updated to more C++ conventions.
+
+ * pol: converted to C++ class
+
+ * sgp: Added linestyle settings
+
+2.5.0 - 12/18/00
+ First Microsoft Windows GUI version
+ Modifications for Microsoft Visual C++ compilation.
+ Improved pjinfo to output binary headers and view data, useful
+ when manually compiling phantoms that vary during projection
+ process. Thanks to Ian Kay for idea and code submission.
+ Improved sorting to find median in ImageFile::statistics
+ Fixed core-dump bug in Array2dFile::labelsCopy() function (Ian Kay)
+ Changed reconstruction dialog to fix onto smaller screens
+ Fixed display of plotting in Projection views
+ Improved animation displays for Projections and Reconstructions
+ Changed code to explicitly use std:: namespace rather than
+ "namespace using std" statements
+ Fixed reconstruction scaling bug introduced in 2.0.6
+ Renamed if2img to ifexport, if-1 to if1, if-2 to if2
+
+2.0.6 - 12/03/00
+ Fixed minor compilation problem with procsignal.h
+ Updated README file
+ Fixed bug when simulating projections and Trace == CONSOLE
+ Fixed scaling bug when performing redundant rotations around object
+
+2.0.5 - 12/01/00
+ Improved compilation on RedHat 7
+ Changed some of ANSI C header files to C++ header files
+ Removed README.RedHat7
+
+2.0.4 - 11/25/00
+ Added documentation for --geometry setting
+ Added README.RedHat7 document
+
+2.0.3 - 11/20/00
+ Fixed bug in generation of binary PGM files
+ Fixed MPI compilation bug in phm2pj.cpp
+ Inverted y-axis output for pj2if (bug alert from Ian Kay)
+
+2.0.2 - 11/8/00
+ Additions to man pages (Ian Kay)
+ Fix problem with reading of ASCII phantom files (Ian Kay)
+
+2.0.1 - 10/1/00
+ Fixed syntax error in fftw configuration
+ Slight modifications to support gcc v2.9.6
+
+2.0.0 - 9/7/00
+ Version 2.0.0 released!
+ ctsim: Added Window menu to Main frame
+ ctsim: Disabled not support reconstruction method
+ Fixed obscure bug in sys_error
+ Fixed compilation in mingw environment not present
+ Fixed compilation in non-graphical environments
+