Todo

Support ftp and sftp destination.
Support new full backups.
Support deletion of old backups.
Create a release.
Create Binary container class(singleton object).
Get command function for incremental backup.
Get settings function.
Create client destination classes.
diff r option
create log service
create backup instance class.

Done:

Support composer.
Support excluded subfolders.
Create unit tests.
Support tar command
Create execution class.
Create method to set duplicity command.
Create a Factory.
Create exceptions.