Release 3.23.4.0

Prepare the 3.22.12.0 release (#563)

aredn: prepare the 3.22.8.0 release (#484)

aredn: Prepare the 3.22.6.0 release (#391)

bugfix: remove filename checks for firmware uploads (#201)

* bugfix: remove filename checks for firmware uploads

* remove extra variable that are no longer needed

aredn: Prepare the 3.21.4.0 release (#92)

* aredn: Prepare the 3.21.4.0 release

* add Mikrotik mAntbox to README

aredn: Prepare 3.20.3.1 release (#546)

aredn: Prepare 3.20.3.0 release (#495)

aredn: Prepare 3.19.3.0 release (#384)

AREDN 3.18.9.0 Release