tagged v0.6d and updated version to 0.6e

missed a file...

version 0.6b (pre FRD)

tag of version 0.6a

version 0.5c

tagging 0.5a

Version 0.4c tag

tag of v0.4b + updated trunk to 0.4c

moving v0.4a branch to tags (Princeton changes)

tagging version 0.3d