Finished up webdav, and after running testremote for a long time, I'm satisfied it's good. The newchunks branch has now been merged into master completely.

Spent the rest of the day beginning to rework the S3 special remote to use the aws library. This was pretty fiddly; I want to keep all the configuration exactly the same, so had to do a lot of mapping from hS3 configuration to aws configuration. Also there is some hairy stuff involving escaping from the ResourceT monad with responses and http connection managers intact.

Stopped once initremote worked. The rest should be pretty easy, although Internet Archive support is blocked by This is in the s3-aws branch until it gets usable.