4.6 Fixes addTimer bug in emulator.
4.5 Fixes off-by-one error in taking number of nodes as input in simulator mode.
4.4 Fixes iPAQ issues.
4.3 Simulator fixed to take number of nodes as input.
4.2 Fixes sendPkt crash in emulator.
4.1 Fixes exammple node.rb and other issues in version 4.0.
4.0 This version is fatally flawed.  Do not use.