update changelog, prep for 2.4.2
update changelog, prep for 2.4.2

screenconcept/qbrick,screenconcept/kuhsaft,screenconcept/qbrick,brandleadership/qbrick,brandleadership/kuhsaft,screenconcept/kuhsaft,screenconcept/qbrick,brandleadership/kuhsaft,brandleadership/qbrick,screenconcept/kuhsaft,brandleadership/qbrick,brandleadership/kuhsaft