Update version of AWS SDK.
Add a close method to FileStoreFlickr.

This method sorts the sets (albums). I'm not sure close() is appropriate
for this. Need to revisit the name. Maybe sort(). Maybe allow a
Comaparator<String> as a param.
Merge branch 'sortsets' into develop
Remove FlickrException from FileStore interface.

Wrap these in RuntimeException and let them bubble up. Want any
exception to abort the higher-level operation. (It was quite silly to
force a user of a FileStoreLocal to have to handle FlickrException just
because FileStoreFlickr also implmenets FileStore.)
Remove throws from some of FileStore interface.

More to do here, including updating the calling code.
Don't throw checked from getLocalCopyForRead().
Remove checked exceptions from addFromLocalCopy().
Remove checked exceptions from FileStore.delete().
Final exception cleanup.
Merge branch 'exceptions' into develop