Update to 0.32

Upstream changes:
0.32    2015/03/10 19:54:22
        [CHANGES]
        * Documentation updates for new ->wrap_cb method

        [BUGFIXES]
        * Empty convergents should respect subclassing (RT97537)
        * Adjust loss-report regexp for bleadperl (RT99002 again)
        * Make trailing periods in warning tests optional, to account for
          Carp version changes (RT100685)

0.31    2015/03/08 17:50:06
        [CHANGES]
        * Added debugging warning when destroying a failed Future that has
          not reported its failure (RT102198)
        * Have ->and_then / ->or_else die immediately to further their
          deprecation
        * Announce done_cb/fail_cb/cancel_cb as deprecated in favour of curry
        * Provide ->wrap_cb method (experimental)

        [BUGFIXES]
        * Ensure that Test::Future does not retain Futures once they are
          complete (RT101128)
        * 'use Future' in Future::Utils (RT102167)

(wen)