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To reduce future import cycles, and expose more types properly, move the root package to an
interface/types file and move the main implementation into /impl. This also exposes an interface
other implementers can replace.

feat(graphsync): support extension protocol

return a boolean instead of an error if an extention is found on a message

Per https://github.com/ipld/specs/pull/205, metadata is now an extension, and further extensions
will be added soon

Bump go-ipld-prime to 092ea9a7696d

Fix some typo

fix(messagequeue): no retry after queue shutdown

Previously, we allowed the last message send attempt to run to maxRetries if the queue was shutdown,
which also generated warning logs. Now, if a send attempt fails, check that the queue has shutdown
and immediately return if it has

Limit Response Size

limit the size of blocks sent in a response to 512k a.l.a. bitswap

add test to repro errors with message size exceeding in slow connection with large blocks

Remove unneeded old dependencies

Utility functions to construct loaders/storers from a go-blockstore

downgrade logging in ReceiveError to an Info level warning to match Bitswap ReceiveError behavior

update go-ipld-prime

update go-ipld-prime

update go-ipld-prime

Add conn management and update libp2p

Adds callbacks to manage connections, also removes network receiver methods from public graphsync
interface, and updates libp2p to handle go-libp2p-core refactor

feat(ipld): update ipldbridge and integrate

Updates IPLD Bridge to use latest go-ipld-prime and runs and actual round trip test using GraphSync,
go-ipld-prime, and real selectors

Add storer to Graphsync Initialization

Change readme badges to point to go-graphsync

ci(travis): add travis.yml

add travis yml so tests run

Update README.md

Links changed

docs(architecture): flesh out architecture docs

Graphsync Requestor Receives Responses And Validates Them

Provide a detailed guide to the architecture of go-graphsync
Co-Authored-By: MollyM <momack2@users.noreply.github.com>

Successfully execute query on remote system and return results

Improve Error message on missing blocks, and also add missing comments