No fix is complete without a test.

fixes #6670

pin: fix pin update X Y where X==Y

We were pining Y then removing the pin for X. When X == Y, we'd remove the new
pin.

fixes #6648

namesys: set the correct cache TTL on publish

fixes https://github.com/ipfs/go-ipfs/issues/6656#issuecomment-534252128

discovery: improve mdns warnings

* Don't warn when connecting to peers.
* Include the peer id when failing to connect to discovered nodes.

feat: web ui 2.5.4

cmds(help): fix swarm filter add/rm help text

These _are_ added/removed from the config.

fixes #4605

feat: webui 2.5.3

Superseeds #6635.

build: fix golangci again

The patches that required the replace directives have been merged upstream.
Unfortunately, those branches have now been deleted, breaking the build.

GAH!

make: move all test deps to a separate module

1. This means those deps don't get pulled in unless we actually need to test.
2. It means we can cordon all the golangci-lint module replace hacks off into a
   separate package.

fix: close peerstore on stop

feat: web ui 2.5.1

docs: add multiple gateway and api addrs

fixes #6627

doc: add post-release checklist

build: fix build when we don't have a full git tree

Co-Authored-By: Alan Shaw <alan.shaw@protocol.ai>

When building with docker, we don't have a _full_ git repo.

docs: add ship date and next release issue opening time

docker: libdl dependency

Adds estimated shipping date (can be fuzzy) to the release issue template and clarifies the time before which the next release issue should be opened. This communicates expectations for when the new release is due and will help with planning of included features. The community could even suggest inclusions.

docs: improvements to the release doc

plugins: add support for plugin configs

* Adds missing items to ToC
* Adds sub-level items to ToC (there's not many, lets allow people to more easily skip to a section)
* Moves release process illustration to the top of the release flow section - it's an overview, it should be at the start not the end
* Fix a typo
* Removes braces in "Goal(s):" where there is clearly more than one

For now, configs specified in `daemon --init-config` and `init CONFIG` are not
available. We should fix this eventually but isn't necessary for now (and
supporting this will be annoying).

Update README.md

Removed OpenBSD line per discussion started with https://github.com/ipfs/docs/issues/254#issuecomment-526372366