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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: Jeromy <why@ipfs.io>

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

Rework go-ipfs to use content IDs version 0

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

test: 82% coverage on blocks

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@ipfs.io>

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

License: MIT
Signed-off-by: Kevin Atkinson <k@kevina.org>

License: MIT
Signed-off-by: Kevin Atkinson <k@kevina.org>

Add log events when blocks are added/removed to/from the blockstore

For the rest of the packages in util, move them to thirdparty
and update the references. util is gone!

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)

the u.Hash error can be safely ignored (panic) because multihash
only fails from the selection of hash function. If the fn + length
are valid, it won't error.

cc @whyrusleeping

dependencies are vendored into Godeps/_workspace and commit versions are
recorded in Godeps.json

update datastore to e89f0511
update go.crypto

link errors left:
- protocol buffers output is not lint-friendly