Test version 2.0.0-rc1

[ccztux]

[ccztux]

Tasklist for extensive testing:

• Add a notification command to report the backup job status (Add a notification command to report the backup job status #4)
• Multiple pre- and post-backup-scripts (Multiple pre- and post-backup-scripts #123)
• Add example post- and pre-backup scripts (Add example post- and pre-backup scripts #121)