[[!comment format=mdwn
 username="http://smcv.pseudorandom.co.uk/"
 nickname="smcv"
 subject="comment 3"
 date="2013-09-26T14:38:45Z"
 content="""
> \"how changes to underlay files would be detected?\"

Changes to files in underlays are picked up automatically, as long as
their mtime changed.

> Couldn't figure out how to do [metadata] in in album.pm

Yeah, I need to implement a hook mechanism or something
(and work out where I put the exif plugin mentioned in
the page).
"""]]