Log Message:
Update to 0.94

Upstream changes:
0.94 Fri Feb 12 18:55:05 GMT 2016

  Bug fixes:
  * move __END__ above POD in documentation (plicease)
  * Don't clobber $SIG{__DIE__} and $SIG{__WARN__} in open3_run() (avar)
  * Fix 'terminate_on_signal' segfaulting (Petya Kohts)
  * Fix usage of fcntl(..., F_GETFL, ...) (tonyc)