Log Message:
Update 1.37 to 1.39
-------------------
1.39    2014-11-01

- Replaced the Exception::Class::Base->NoRefs method with UnsafeRefCapture to
  match changes in Devel::StackTrace 2.00. The old method is deprecated but
  will continue to work.

1.38    2014-05-05

- An exception without a message will now default to either the associated
  exception class description or the string "[Generic exception]". Patch by
  Ricardo Signes. PR #2.

- Added field_hash() and context_hash() methods. Patch by Ricardo Signes. PR
  #1.