Add a UnixFS `Directory` that hides implementation details and helps to
distinguish *what* is a UnixFS directory.

Replace the `unixfs.io.Directory` structure that contained the HAMT and basic
directory implementations (through inner pointers) with an interface containing
the same methods. Implement those methods in two clearly distinct structures for
each implementation (`BasicDirectory` and `HAMTDirectory`) avoiding pointer
logic and clearly differentiating which implementation does what.

The potential basic to HAMT transition was being hidden behind the `AddChild`
call at the UnixFS layer (changing one implementation pointer  with the other
one), it is now being explicitly done at the MFS layer.

Rename the `dirbuilder.go` file to `directory.go` and change the `Directory` MFS
attribute `dirbuilder` to `unixfsDir` to be consistent.

License: MIT
Signed-off-by: Lucas Molas <schomatis@gmail.com>

Ipfs 0.4.16 release candidate 2

License: MIT
Signed-off-by: Whyrusleeping <why@ipfs.com>

when running an external command, only construct a node if running in online mode

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

This breaks commands like `ipfs update` that expect IPFS to *not* be running.

fixes #5191

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

Grammar fix

License: MIT
Signed-off-by: Alfie John <alfie@alfie.wtf>

add: use file name instead of path name

License: MIT
Signed-off-by: Masahiro Saito <camelmasa@gmail.com>

Ipfs v0.4.16-rc1

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

gx update

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

Updates:

* go-kad-dht: Query performance improvements, DHT client fixes, validates
  records on *local* put.
* go-libp2p-swarm/go-libp2p-transport: Timeout improvements.
* go-multiaddr-net: Exposes useful Conn methods (CloseWrite, CloseRead, etc.)
* go-log: fixes possible panic when enabling/disabling events.
* go-multiaddr: fixes possible panic when stringifying malformed multiaddrs,
  adds support for consuming /p2p/ multiaddrs.

fixes #5113
unblocks #4895

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

fixup DHT sharness tests

add record validation to offline routing

see #5113

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

We can't currently put binary values due to API limitations. This worked before
because the DHT wasn't checking values on local put.

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

fixes #5115

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

explicitly import go-multiaddr-dns in config/bootstrap_peers

Add system requirements to README

We need it to parse the dnsaddr addresses. While we import it elsewhere, we
should really be importing it every where we need it so that other users can
import our packages directly.

fixes #5143

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

License: MIT
Signed-off-by: Rob Brackett <rob@robbrackett.com>

ci: Archive sharness trash dirs

make republisher test robust against timing issues

Fix how filestore is hooked up.

extract ipns record logic to go-ipns

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

retry publishing with a longer EOL if the first attempt fails due to a timeout.

fixes #5099

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

License: MIT
Signed-off-by: Łukasz Magiera <magik6k@gmail.com>

Closes #5121.

License: MIT
Signed-off-by: Kevin Atkinson <k@kevina.org>

disable the MacOS tests in jenkins

They've never really been enabled but they:

1. Are causing the tests to fail for various reasons (e.g., out of space).
2. Take time.

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

reduce log level when we can't republish

Add README to docs folder

Fix panic. Don't handle errors with fallthrough.

improve swarm connect/disconnect commands

cat iptb logs on iptb failure (for debugging CI)

plugin: preload git plugin by default