Add mapped_msetnx too

Change-Id: Ic8afa9527d1b06347fe49fe62572815382c27659
Reviewed-on: https://gerrit.causes.com/20689
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Aiden Scandella <aiden@causes.com>
Cut 0.7.0 release

Change-Id: I7df1458ba799b5a1f9680cb79e615be8194d6945
Reviewed-on: https://gerrit.causes.com/20690
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Greg Hurrell <greg@causes.com>