Import sys in __main__
Do not call ImageSource.refresh, since it does not exist
Added Image.extension
Handle Image.title default value in Image
Added Image.stat
Removed FUSE readlink implementation
Let Image provide file object
Moved file specific Image code to separate class
Moved classes to separate files
Let file handles be file objects
Protect file reading with lock
Merge branch 'fixup-read-synchronization'
Updated release notes