New creates a new FS that uses disk located at 'location' to store cache data.

WithExpireCheck changes at what interval we check for file expiration.

FileMode sets the fs.FileMode when opening a file with OpenFile().

WithLogger allows setting a customer Logger.

WithWriteFileOFOption uses a regex on the file path given and if it matches will apply the options provided on that file when .WriteFile() is called.

FS provides a disk cache based on the johnsiilver/fs/os package.

Option is an optional argument for the New() constructor.