Log Message:
p5-Params-ValidationCompiler: update to 0.25.

0.25     2017-11-23

- All exceptions now include a stack trace by default when treated as a
  string. This makes finding where validation failed a lot easier. Fixes GH
  #18.

- The name for a subroutine is now used in some exception messages, even if
  Sub::Util cannot be installed.