Cut 1.8.2

Signed-off-by: Chris Larsen <[email protected]>

Cut release 1.8.1

Signed-off-by: Chris Larsen <[email protected]>

Cut release 1.8.0

Cut release 1.7.3

Cut 1.7.2

Merge branch 'next'

Release v1.6.0

Release 1.5.0.

Update all dependencies.

Remove jcl-over-slf4j, since ZooKeeper doesn't actually use it,
it uses log4j.

Update NEWS for v1.4.0 and tag release.