It has the same properties as Rabin but is much faster.
Benchmark results:

```
name             speed
Buzhash2/1K-4    1.71GB/s ± 4%
Buzhash2/1M-4    1.15GB/s ± 2%
Buzhash2/16M-4    892MB/s ± 1%
Buzhash2/100M-4   904MB/s ± 2%
Rabin/1K-4       13.8MB/s ± 3%
Rabin/1M-4        171MB/s ± 3%
Rabin/16M-4       182MB/s ± 4%
Rabin/100M-4      182MB/s ± 3%
Default/1K-4     1.74GB/s ± 4%
Default/1M-4     3.22GB/s ± 2%
Default/16M-4    3.88GB/s ± 2%
Default/100M-4   4.21GB/s ± 6%
```

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

Update README.md

Change first link under "Getting Started" to more specific docs per https://github.com/ipfs/go-ipfs/pull/6692#issuecomment-537110811
Ref https://github.com/ipfs/go-ipfs/pull/6692

daemon: support unix domain sockets for the API/gateway

docs: guide users to the right locations for questions

docs: readme improvements

Co-Authored-By: Eric Ronne <eric@protocol.ai>

docs: link remaining docs available, guide people to the right locations

docs: fix broken url

We no longer spit out the annoying http error.

All the work was client-side. Unix domain socket multiaddrs already worked
server-side.

fixes #4218

add systemd support

Update go-libp2p-http (and go-libp2p-gostream)

feat: add ipfs version info to prometheus metrics

Adds `ipfs_info` prometheus metric with version and commit info

```prometheus
ipfs_info{commit="9ea7c6a1-dirty",version="0.5.0-dev"} 1
```

This follows the same pattern as go and other systems, adding a gauge metric that is set to 1, with the version info addeds as labels.

This is a common pattern for prometheus. It lets operators merge version info into other prometheus metrics by multiplying it with the other stat, as described in https://www.robustperception.io/exposing-the-software-version-to-prometheus

For example, we already expose the go version info as

```prometheus
go_info{version="go1.12.9"} 1
```

License: MIT
Signed-off-by: Oli Evans <oli@tableflip.io>

Fix typo

Manually removed some newly-appeared // indirect imports as
they seem to just pollute the go.mod.

That way, we can reliably know when the daemon is ready.

Instead of letting systemd override the configured addresses, merge them. This
is likely the "expected" behavior.

License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>

License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>

License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>

chore(dep): update everything

* multiaddr (fixes issues when the latest go-multiaddr is imported)
* libp2p (lots of fixes)
* prometheus
* gogo/protobuf

fixes #6676

github: migrate actions

Add bridged chats