More comprehensive testing of transfer_to/transfer_from
Fixes for mem:// protocol (parsing, buckets)
File-to-file transfers handle compression
Low memory transfer to gs, s3 by using file handles from local disk
gs->gs and s3->s3 copies no longer require download/upload from client
Support for renaming files during transfer
Use the main thread for single element jobs
Removes monkey patch from CLI as this causes problems with boto's advanced functions which use threads under the hood
CloudFiles automatically decides whether to use threads or green threads depending on the monkey patch state (you can still force it to use one or the other)
mem://protocol (parsing, buckets)