GitLab

* feat(notifications): build notifications architecture

build an architecture via which we can pass on notifications

* feat(peerresponsesender): add notifications

pass notifications on from peer response sender based on message queue notifications

* feat(responsemanager): handle network errors

Pass on network errors through the response manager, pass block sent errors as well

* fix(notifications): send unique notifications by peer

* feat(responsemanager): subscriber per request

* Revert "fix(notifications): send unique notifications by peer"

This reverts commit 7bf368a05d14229b7523cb25068681d9c7e48246.

* 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

* ci(circle): switch to circle

Use configs from bitswap

* fix(deps): update and standardize

* fix(lint): fix lint errors

* fix(tests): relax timings for context cancels

Since we are not relying on context cancellation as anything but a test failsafe, relax timings
significantly for slower machines

* fix(test): fix minor test error

* fix(tests): minor timing fix

* fix(lint): fix lint errors

* fix(tests): relax timings for context cancels

Since we are not relying on context cancellation as anything but a test failsafe, relax timings

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

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

Convert GraphSyncRequest and GraphSyncResponse to structs, track by value, pass directly into add
methods on GraphSyncMessage

Add the ability to send blocks and receive notification when complete to messagequeue

Create a message queue to pool messages for a single peer and send them