Display progress meter on send and receive from remote.
Added a new hGetMetered that can read an exact number of bytes (or
less), updating a meter as it goes.
This commit was sponsored by Andreas on Patreon.
In case the repo on the peer changes uuid (eg by a new repo being moved
into place).
Also, added some warning messages when unable to communicate with a
peer.
This commit was sponsored by Anthony DeRobertis on Patreon.
Not tested at all, but it just might work.
Only known problem is that progress is not updated when storing to a P2P
remote.
This commit was sponsored by Nick Daly on Patreon.
Similar to GCrypt remotes, P2P remotes have an url, so Remote.Git has to
separate them out and handle them, passing off to Remote.P2P.
This commit was sponsored by Ignacio on Patreon.
