Changes since the 2.5 series:

The major change, and the reason for the version bump, is that timeout
handling has been improved.  Previously, timed out operations may have
actually been written to the network even after they'd timed out.  The
change required some small API changes (generally forward compatible
so minor version bump only) and adds a new operation state of timedout.

Other changes include performance enhancements, transcoder enahncements
and improvements in the continuious timeout counter to be per
connection rather than for the entire MemcachedClient.  The library is
now easier to use in Spring as well, owing to a FactoryBean contribution.

Between rc1 and rc2, a major issue (issue 175) with the
KetamaNodeLocator was found, so some changes were backported along with
the fix.

(notes updated from rc1)

Contributors:
    19  Matt Ingenthron
     9  Blair Zajac
     3  Dustin Sallings
     3  Boris Partensky
     1  Eran Harel
     1  Andrey Kartashov
     1  ddlatham