0.9.0

• commandline interface restructured, commands are now grouped into "builds, app, inputs, repo" groups
• all show and ls commands support CSV output
• build.command parameter is removed from .baur.toml repository config
• authentication for docker image upload via the docker credential helpers works now transparently, setting the DOCKER_USERNAME, DOCKER_PASSWORD environment variables is now obsolete
• new baur builds ls command to list pass builds of apps
• apps ls supports now to specify the fields that are be printed
• if 2 or more BuildInput paths in an application config resolve to the same file, it doesn't break storing builds anymore, the buildinputs are deduplicated
• the path of buildInputs is included in the digest, this ensures that if the content of a buildinput file is not changed but the file itself is moved that a rebuild is done
• fix the --start-date parameter of baur verify, in some cases the passed start-date was ignored
• more minor fixes and changes