GitLab

* feat(message): switch to google protobuf

after tracking down an error in Unmarshal code generate by gogoprotobuf, and verifying this is a
bug in the library, which appears unmaintained, try switching to google's own golang protobuf tools

* fix(message): upgrade msgio

resolve bad message strings

* feat(message): initialize empty extensions

Initialize extensions to map if nil

* style(imports): fix import formatting

Fix import formatting via script. Also add script for import fixes and release log

* docs(CHANGELOG): add changelog, contributing

Add the changelog and a contributing guidelines doc

protobuf generated code was generated with old version of gogo-protobuf

* feat(graphsync): add update to message

add update to message protobuf. also fix deserialization error with cancel requests

* feat(requestmanager): support updates for response hooks

Support sending request updates in incoming response hooks. Also factor hooks out of request manager

* refactor(hooks): make hooks approach consistent

for ease of use and learning in library, make hooks structure consistent across requestor and
responder

* feat(responsemanager): update request processing

Add the ability to processing update requests as needed

* test(responsemanager): add more tests for update behavior

* test(integration):add update integration test

Add test to verify the whole update flow

* fix(lint): fix lint error

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

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

Update to finalized protobuf format.
Also remove deprecated selector interface which is out of date

Initial implementation of graph sync messages including protobuf struct and
serialization/deserialization

fix #2 fix #3