Log Message:
p5-Net-DNS: update to 1.15.

**** 1.15 Feb 9, 2018

	GOST R 34.11-94 hash algorithm: end of life 1st Jan 2018
	per sunset clause in successor standard GOST R 34.11-2012.
	Digest::GOST removed from the recommended module metadata,
	but will still be used if available.