Update to 0.22:

**** 0.22 February 11, 2015

  Fix: rt.cpan.org #101184
  make siginception and sigexpiration available as time() values

  Fix: rt.cpan.org #101183
  wrong URL for blog in README

  Fix: rt.cpan.org #83031
  [RRSIG] lack of ECDSA support

***0.21 October 24, 2014

  Fix: rt.cpan.org #99250
  [RRSIG] validation fails when Signer's Name is upper case

  Fix: rt.cpan.org #99106
  Premature end of base64 data  (in 14-misc.t test script)

***0.20 August 15, 2014

  Fix: rt.cpan.org #97457
  !hex! error when parsing NSEC3 with empty salt

***0.19 Jun 6, 2014

  Remove inappropriate deprecation warning in DNSKEY.pm

***0.18 May 8, 2014

  Recode RR implementations to provide Net::DNS 0.69+ interface.

  Fix: rt.cpan.org #95034
  Failure to parse NSEC3PARAM record with null salt

  Fix: rt.cpan.org #81289
  Failure to handle GOST DS records

***0.17 November 29, 2013

  Fix: rt.cpan.org #90270
  NSEC3->covered() should use case-insensitive comparisons

  Fix: rt.cpan.org #79606
  Lower case zone-name part with DNSKEY::privatename

  Allow to specify algorithms with ::Private->new_rsa_private and
  ::Private->generate_rsa instead of assuming RSASHA1.

  Fix: rt.cpan.org #55621
  Specify license type (mit) in META.yml

  Fix: rt.cpan.org #60269
  Remove Digest::SHA1 prerequirement

  Fix: rt.cpan.org #62387 & #63273
  Typo fixes

  Fix: rt.cpan.org #62386
  Make Net::DNS::RR::DS::digtype method work

  Fix: rt.cpan.org #62385
  Do not compress Next Domain Name in NSEC rdata.

  Fix: rt.cpan.org #61104
  Spelling correction in DS.pm and fix of key2ds demo program

  Fix: rt.cpan.org #60185
  Make sure %main::SIG hash keeps its values when compiling Net::DNS::RR::SIG
  in perl versions before 5.14.  See also: rt.perl.org #76138

  Fix: rt.cpan.org #64552 and rt.cpan.org #79606
  Support for private-key-format v1.3

  Fix: rt.cpan.org #75892
  Do not canonicalize the "Next Domain Name" rdata field of a NSEC RR
  for draft-ietf-dnsext-dnssec-bis-updates-17 compliance.

  BUG FIX/FEATURE: validation of wildcard RRs now available. Duane
  Wessels is acknowledged for submitting the initial code on which
  this fix is based.

  FIX: case sensitivity of ownername during DS generation
        (Acknowledgements Jens Wagner)

(wiz)