Better listing of S3 contents
prep for creating separate file store for diffs
Fix mount point for multiple btrfs filesystems
Resumable xfers, with checksummed chunks
Implement delete
verbosity tweak
fixes to .bs info files, and regression testing of multipart uploads
Better error handling and messages
documentation tweaks
Added feature list
Better detection of btrfs send errors
fix to find S3 diffs when volumes are spread across multiple folders
Merge branch 'master' of ssh://git/data/src/git/buttersink
Improved error messages
Don't use diffs in the trash
cost heuristic tweaks to stablize optimization with deletes
clean up logging
doc tweaks