welcome Friendica 2019.09

Merge branch '2019.06-rc'

# Conflicts:
#	CHANGELOG
#	VERSION
#	boot.php

CHANGELOG and version number for the fix release

This is a backup tag before rebasing develop on 854cc3e

Merge branch '2019.03-RC'

missed the day

2018.09 release

Friendica 2018.05

Friendica version 3.6 - The Tazmans Flax-lily

Version 3.5.4