Merge tag '0.2' into develop

tagging 0.2
Merge tag '0.2.1' into develop

tagging 0.2.1
due to not having a proper bash composer gets installed in an unexpected directory
readd composer in home-directory to PATH
reaordering mysql-stuff (borrowed from https://github.com/sameersbn/docker-mysql)
fix mysql-setup logic
Merge branch 'release/0.3'