Changes in this updated version include:
* Fixed floating point round-off errors when running on some 64-bit machines, which prevented Dirk and other characters from moving back and forth along ledges, and kept you from pushing crates off the edge of ledges
* Fixed slippery floors in Chapters 3-1, 3-6, and 4-4 to prevent Dirk from "teleporting" to the other end of the ledge when sliding off the edge