added some header comments
back to a single directory for everything...
update README to reflect that go build now works
added as-yet-unused Game struct
comments and logging tweaks in io.go
moved game loop out of main()
README updates
prevent the README from wrapping on github
nip stupid Game struct idea in the bud
more comments; moved SearchFunction type to search.go
remove a lingering reference to NegamaxWrapper
rename SemiLegalSuccessors() to Successors()
performance improvements in LegalSuccessors()