Merge branch 'hotfix/0.11.2' into develop
Merge branch 'hotfix/0.11.3' into develop
new task: copySSHKeyToDocker

will copy a given ssh key to the docker installation, so ssh-connections from docker to docker won't need a password. Caution: this might compromise your security-workflow, both docker-container must not expose their ssh-port to the public.
add suppoort for installs in other sites-folder than defautl
support for private files
backup private files if available
Merge branch 'hotfix/0.11.4' into develop
use a separate method for calling drush to conditionalize the usage of env-vars
remove option supportsEnvVars, usage of env-vars for drush-output and disable prefixing of drush-commands
better argument naming
support for calling fab from inside the project-folder

it uses the location of the fabfile.py and tries the three parent folders until it can find a fabfile.yaml
Merge branch 'release/0.12.0'