Log Message:
Update p5-MooseX-Singleton to 0.27.

Changes from previous:
0.27 2011-05-19

    - Fix 006-cooperative.t - this test requires MooseX::StrictConstructor
      0.16+ to pass with Moose 2.00+. Reported by Alexandr Ciornii. RT
      #67965. (Dave Rolsky)

0.26 2011-02-26
    - This module will now work with Moose 1.9900+, but it still works with
      older Moose as well. (Dave Rolsky)

    - The test suite now uses Test::Fatal instead of Test::Exception. (Karen
      Etheridge)