Added new upload/download notes
Merge branch 'develop'
Clarified what it offers
Language tweak
Updated
Fixed missing datetime for 0.0.7 in changelog
Added initial Contracts
Started work on new manifest class
Manifest class is now working: can fetch entries and append new ones all to S3
Added thread index to log messages about file ops (useful for debugging)
Added in list of files processed
Added in copy_files_manifest - should be complete except for process_files not being manifest-aware
Manifest code now working completely