0.2 -> 0.2.1
    * Replaced deprected Prelude.catch by Control.Exception.catch.

0.1.2 -> 0.2
    * Supports GHC-7.0.* and GHC-7.2.1
    * Using Haskell2010
    * Default MailBox implementation now uses TChan
    * Removed some warnings

0.1.1 -> 0.1.2

0.1 -> 0.1.1
    * Updated demo
    * Works with time == 1.1.* || == 1.2.*