[Haskell-cafe] ANN: gray-extended (tools for working with Gray codes)

I'm happy to announce a new package called gray-extended http://hackage.haskell.org/package/gray-extended-1.2 https://github.com/mhwombat/gray-extended (github) ABOUT GRAY-EXTENDED: Gray codes satisfy the property that two successive values differ in only one digit. Usually the term \"Gray code\" refers to the Binary Reflected Gray code (BRGC), but non-binary Gray codes have also been discovered.