ci: Skip nightlies when no changes have been committed.

chore(release): Prepare tag for release 2.6.5-TEST

chore(release): Prepare tag for release 2.6.4-SLUG

chore(release): Prepare tag for release v2.6.4-DUMMY

version 2.6.4

tag v2.6.3 release

v2.6.2 released 2016-10-24

Tagged version v2.6.1 release

flex v2.6.0 release

mention flex 2.5.39 release in NEWS file