+ * ctsim: Added center-detector concept. Allow for detector array
+ to be any arbitrary distance from center of scanner. As a result,
+ projection files are not incompatible with previous version of
+ CTSim.
+
+ * ctsim: Added generic threaded tasks and background manager for
+ background processing as well as taking advantage of multiple-CPU's
+ on SMP systems.
+
+ * ctsim: Added PPM/PGM and PNG file import to imagefile.
+
+ * ctsim: Added import of DICOM grayscale files.
+
+ * ctsim: Added background and SMP processing for reconstructions.
+
+ * ctsim: Added background and SMP processing for scanning.
+
+ * ctsim: Added background and SMP processing for rasterization.
+
+ * ctsim: Added "Verbose Logging", "Startup Tips", and
+ "Background processes" options to Preferences dialog.
+