Having the total progress is much more useful than for the individual
files, especially for transfers with many files.

Closes #26

Refers to #26

Refers to #24

All projects (and namespaces) should start with an "ATx" prefix, having
a capital "AT" and a lowercase "x".

CreateNewDirectory, CheckForDirectory and CollectOrphanedFiles.

Fixes #24

Currently this is almost entirely untested and configuration for email
notifications is yet to be done.

Refers to #3

Corresponds to "autotransfer-v1".