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.