[dovecot/pigeonhole] bd7dd9: Added v0.4.20 to NEWS.

[GitHub]

  Branch: refs/heads/master-0.4
  Home:   https://github.com/dovecot/pigeonhole
  Commit: bd7dd9be70ff7e29de022da7bae962647f8f0061
      https://github.com/dovecot/pigeonhole/commit/bd7dd9be70ff7e29de022da7bae962647f8f0061
  Author: Stephan Bosch <stephan.bosch at dovecot.fi>
  Date:   2017-10-05 (Thu, 05 Oct 2017)

  Changed paths:
    M NEWS

  Log Message:
  -----------
  Added v0.4.20 to NEWS.