ENH: Upgrade version to 1.6.0
ENH: Upgrade version to 1.6.0

jcfr/CDash,cpatrick/CDash,jcfr/CDash,jcfr/CDash,cpatrick/CDash,jcfr/CDash,jcfr/CDash,cpatrick/CDash,cpatrick/CDash,jcfr/CDash,cpatrick/CDash,cpatrick/CDash