||A computer-independent view and addressing scheme of a common folder.
The fss, set up with a project directory folder, provides an interface to
work with all the files within this folder, in a way that does not depend on
which path delimiters the OS uses.
All relevant operations such as
writing, deleting, moving, hashing files are supported.
A special feature is watching for events on the folder, such as file creation,
deletion and modifications.