Update to 0.1.2

changes:
0.1.2
  - export natural from Numeric.Natural.
  - INLINE all the things
  - added `natural`
  - Try for support for old `Cabal` versions (1.8 for Debian stable) for issue
    https://github.com/ekmett/nats/issues/1
Update to 0.11

CHANGELOG:
0.11
* Added the missing instance for `HashSet`.

0.10
* Added support for `unordered-containers`, `bytestring` and `text`.