Otherwise looks weird with multiple items.

formula: pinned keg is not eligible for cleanup

Also report Cask coverage.

docs: add missing </pre>

audit: various tweaks

If formula is pinned it shouldn't be eligible for cleanup.
Otherwise we can encounter the following behaviour:

1. Install <formula>
2. Pin <formula>
3. <formula> gets outdated
4. Install <other_formula> that depends on <formula>, which requires
up-to-date installation of <formula>. Thus, <formula> gets updated.
5. Now, if we cleanup <formula> we don't remove pin, so it points to
the keg which doesn't exist any longer. The right behaviour is not
to cleanup pinned kegs, which is done in this commit.

Also see #831 for further info.

formula_installer: install deps of dep before dep

Dependencies/requirements of a dependency need to be installed/satisfied
before the dependency. The fact that @pour_failed may be false is
irrelevant to that imperative if we weren't pouring to begin with, so
this commit now checks for that case as well.

scm/git: make --homebrew=print-path use realpath.

update.sh: reset pre-stash, die if stash fails.

docs: fix a typo in plist_options?

While using `"true"` instead of `true` wouldn't break anything, it doesn't
seem to be expected, and using `"false"` instead of `false` _would_ break
things.

Allow deprecated hash syntax in Cask headers

bottles: translate foo@1.2 to fooAT1.2

Add `--full-name` option to `brew deps`

This allows changed formulae in taps to be tested in the proper order.
See #738 for more details.

Add --full-name option to brew deps command,
which displays the full name of dependencies.

formulary: handle @ formulae.

Before this change:
```
~> brew search openssl@1.1
openssl@1.1 
==> Did you mean to perform a regular expression search?
==> Surround your query with /slashes/ to search by regex.
```

brew: execute update before tap

This seems generally like a good idea given that we're making syntax changes to
formulae & are going to keep doing so for a little while yet. Taps may have moved
over to that syntax, which then causes tap failures if brew isn't up-to-date.

Should fix situations like https://github.com/Homebrew/homebrew-php/issues/3545.

Don’t use `should` syntax in rspec.

* Replaced ; with && under Update Bug in README.md.

* Updated issue template's brew update fix.

Brew-Test-Bot-For-Core-Contributors: fix broken link

Fix missing `magenta` in Tty.