-1.9.1 - 6/20/2000
+1.9.2 - 6/20/2000
Converted all file i/o to C++ library
+1.9.1 - 6/20/2000
+ Renamed directories, moved source files, combined source files
+
1.9.0 - 6/15/2000
Skip versions to make version 2.0 the first C++ version
Renamed Raysums to Projections throughout files