* allow to use one application for multiple repositories
* update tests
* handle None append argument everywhere
* rewrite repository definition logic
* drop optional flags from docs
* support of new schema in systemd units
* add migration docs and ability to migrate tree automatically
* use repostory id instead
* verbose multiarchitectureerror
* object path support for s3 sync
* fix tests after rebase
Some commands have been moved to another group and thus having another
default name (old subcommands are still available...for now):
* daemon -> repo-daemon
* key-import -> service-key-import
* repo-clean -> service-clean
* repo-config -> service-config
* repo-config-validate -> service-config-validate
* repo-setup -> service-setup
* repo-shell -> service-shell
* version -> help-version
* migrate docstrings from reST to google format
* add raises note
Also change behaviour of the `from_option` method to fallback to
disabled instead of raising exception on unknown option
* fix part of warnings for sphinx
* make identation a bit more readable
* review fixes
* add verbose description for properties to make them parsed by sphinx extenstion
* add demo sphinx generator
