0.6.1 doesn't compile for me due to missing lang pragma

[Aycan iRiCAN]

Using ghc-7.6.3 on a linux box:

Data/Functor/Day.hs:57:26:
    Illegal kind signature: `g'
      Perhaps you intended to use -XKindSignatures
    In the type signature for `fa'

Data/Functor/Day.hs:59:24:
    Illegal kind signature: `f'
      Perhaps you intended to use -XKindSignatures
    In the type signature for `ga'

[Edward Kmett]

Fixed.

[Aycan iRiCAN]

Thank you.