cmdeploy: suppress SSH login info message

release v1.6.0

fix tests

make another release

make disable_ipv6 optional (and default to false) to not break existi…

…ng chatmail.ini's unneccessarily

update version to 1.3.0

prepare tagging 1.2.0

1.1.0 deployed (to nine) and tested

this commit still contains an AfterQueueFilter