+2.0.0-b4 - 7/11/00
+ Fixed compiler warnings at -Wall level
+ Began work on CTSim program to be graphical front-end of all functions
+ Moved current src/*.cpp to tools/*.cpp
+ Made CTSim graphical front-end's home to be src/
+
2.0.0-b3 - 7/10/00
Added highly optimized backprojection method idiff3
Moved comparative stats to if-2 program from ifinfo