Log Message:
Update to 1.15:

1.15    2015-01-01

- No changes from 1.14

1.14    2014-12-20 (TRIAL RELEASE)

- Callbacks can now die to provide a custom error message or exception
  object. Requested by multiple people. Addresses RT #95701 and will allow
  MooseX::Params::Validate to use messages provided by the type object.