Wrapper around the FUSE API for making simple ad-hoc virtual filesystems.

This is not intended as a general-purpose FUSE library. Instead, this is intended to be a simple way to make a virtual filesystem for a specific purpose. In particular, this will probably never have a stable API.

The FUSE API is complex, and this library is intended to facilitate the relatively simple use case of having "a file backed by a script" (i.e. the /proc filesystem).

Examples of what this could be useful for:

• viewing a single large file as a directory of smaller files
• viewing a directory of files as a single large file
• (todo)

• All directories and files have permissive attributes (i.e. 0o777).