Updated copyright notices to include the year 2018.
Updated copyright notices to include the year 2017.
push-notification: Small optimization - don't lookup uidvalidity for each message.
global: freshen copyright git ls-files | xargs perl -p -i -e 's/(\d+)-201[0-5]/$1-2016/g;s/ (201[0-5]) Dovecot/ $1-2016 Dovecot/'
Added push-notification plugin