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This change adds the /ipfs/bitswap/1.1.0 protocol. The new protocol
adds a 'payload' field to the protobuf message and deprecates the
existing 'blocks' field. The 'payload' field is an array of pairs of cid
prefixes and block data. The cid prefixes are used to ensure the correct
codecs and hash functions are used to handle the block on the receiving
end.

License: MIT
Signed-off-by: Jeromy <why@ipfs.io>

License: MIT
Signed-off-by: Jeromy <why@ipfs.io>

License: MIT
Signed-off-by: Jeromy <why@ipfs.io>

License: MIT
Signed-off-by: George Antoniadis <george@noodles.gr>

bitswap stat can now track bytes that are wasted by receiving duplicate
blocks.

ps, gitcop smells

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

- Modified Godeps/Godeps.json by hand
- [TEST] Updated welcome docs hash to sharness
- [TEST] Updated contact doc
- [TEST] disabled breaking test (t0080-repo refs local)