* implement local reporter mode
* simplify watcher class
* review changes
* do not update unknown status
* allow empty key patches via api
* fix some pylint warnings in tests
Add support of changes generation. Changes will be generated (unless explicitly asked not to) automatically during check process (i.e. `repo-update --dry-run` and aliases) and uploaded to the remote server. Changes can be reviewed either by web interface or by special subcommands.
Changes will be automatically cleared during next successful build
