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Bumps [github.com/ipfs/go-ipfs-blockstore](https://github.com/ipfs/go-ipfs-blockstore) from 0.1.1 to 0.1.4.
- [Release notes](https://github.com/ipfs/go-ipfs-blockstore/releases)
- [Commits](https://github.com/ipfs/go-ipfs-blockstore/compare/v0.1.1...v0.1.4)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

chore(deps): bump github.com/ipfs/go-datastore from 0.3.1 to 0.4.4

Bumps [github.com/ipfs/go-datastore](https://github.com/ipfs/go-datastore) from 0.3.1 to 0.4.4.
- [Release notes](https://github.com/ipfs/go-datastore/releases)
- [Commits](https://github.com/ipfs/go-datastore/compare/v0.3.1...v0.4.4)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

chore(deps): bump github.com/ipfs/go-log from 1.0.1 to 1.0.2

chore(deps): bump github.com/multiformats/go-multiaddr from 0.2.0 to 0.2.1

chore(deps): bump github.com/libp2p/go-libp2p from 0.5.1 to 0.5.2

Refactor: simplify session peer management

* fix: ensure broadcast when peer becomes unavailable and all other peers sent DONT_HAVE for CID

* fix: lint warnings

* refactor: simplify session want sender DONT_HAVE list

* fix: flaky test

* test: add session exhausted wants test

* docs: improve sessionWantSender processAvailability docs

Bumps [github.com/multiformats/go-multiaddr](https://github.com/multiformats/go-multiaddr) from 0.2.0 to 0.2.1.
- [Release notes](https://github.com/multiformats/go-multiaddr/releases)
- [Commits](https://github.com/multiformats/go-multiaddr/compare/v0.2.0...v0.2.1)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [github.com/ipfs/go-log](https://github.com/ipfs/go-log) from 1.0.1 to 1.0.2.
- [Release notes](https://github.com/ipfs/go-log/releases)
- [Commits](https://github.com/ipfs/go-log/compare/v1.0.1...v1.0.2)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [github.com/libp2p/go-libp2p](https://github.com/libp2p/go-libp2p) from 0.5.1 to 0.5.2.
- [Release notes](https://github.com/libp2p/go-libp2p/releases)
- [Changelog](https://github.com/libp2p/go-libp2p/blob/master/NEWS.md)
- [Commits](https://github.com/libp2p/go-libp2p/compare/v0.5.1...v0.5.2)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Prune peers that send too many consecutive DONT_HAVEs

feat: debounce wants manually

This:

* Makes it easy to send immediately if we wait too long and/or if we have enough
to send.
* Is significantly more efficient than the debounce library as it doesn't spin
off a bunch of "after" timers.

fixes #245

chore(dep): update

chore(deps): bump github.com/ipfs/go-cid from 0.0.4 to 0.0.5

Bumps [github.com/ipfs/go-cid](https://github.com/ipfs/go-cid) from 0.0.4 to 0.0.5.
- [Release notes](https://github.com/ipfs/go-cid/releases)
- [Commits](https://github.com/ipfs/go-cid/compare/v0.0.4...v0.0.5)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Fix bug with signaling peer availability to sessions

chore(deps): bump github.com/ipfs/go-cid from 0.0.3 to 0.0.4

feat: move internals to an internal package

This makes reading the docs much easier as it's clear what's "private" and
what's not.

fixes #238

Bumps [github.com/ipfs/go-cid](https://github.com/ipfs/go-cid) from 0.0.3 to 0.0.4.
- [Release notes](https://github.com/ipfs/go-cid/releases)
- [Commits](https://github.com/ipfs/go-cid/compare/v0.0.3...v0.0.4)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

PoC of Bitswap protocol extensions implementation

This commit extends the bitswap protocol with two additional wantlist properties:

* WANT_HAVE/HAVE: Instead of asking for a block, a node can specify that they
  want to know if any peers "have" the block.
* WANT_HAVE_NOT/HAVE_NOT: Instead of waiting for a timeout, a node can explicitly
  request to be told immediately if their peers don't currently have the given
  block.

Additionally, nodes now tell their peers how much data they have queued to send
them when sending messages. This allows peers to better distribute requests,
keeping all peers busy but not overloaded.

Changes in this PR are described in: https://github.com/ipfs/go-bitswap/issues/186