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Also remove deprecated selector interface which is out of date

correction to diagram, protobuff, and remove test function not needed

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

fix #2 fix #3