Update to 0.2.2.2

changes:
0.2.2.2
  -  Merge pull request #7 from hamishmack/master
       Revert "Use template haskell to fix the call to withTempDirectory in Setup.hs so that it works with Cabal 1.17"
         It turns out this will not be changing in 1.18 (official Cabal release), so we need to revert this change.
         https://github.com/haskell/cabal/issues/1387
  - Merge pull request #5 from qrilka/patch-1
      prevent emphasis for '/dev/urandom' path in haddock
0.2.2.1
  - Merge pull request #3 from hamishmack/master
      Use template haskell to fix the call to withTempDirectory in Setup.hs so that it works with Cabal 1.17
0.2.2
  - Add build-time configuration to check for RDRAND support.
  - use RDRand for long-running (CryptHandle) requests.
  - Add RDRAND instruction support.