If `brew instal` is permissible, `brew uninstal` should be, too.

java_requirement: Make macOS overrides extend Requirement

This doesn't actually seem to make that much difference,
but it is at least consistent with the main class body and with
the Linux overrides.

Use `alias_matcher` for `fail_with`.

bump-formula-pr: improve duplicate detection

audit: fix insecure mirror check when stdout is empty

Add /usr/libexec/cups to the list of system dirs

Convert Formulary test to spec.

keg: create symlinks in opt for formula aliases

Convert String test to spec.

Make `Formulary` a `module`.

Convert CompilerFailure test to spec.

Convert Utils test to spec.

Convert Utils::Shell test to spec.

Reduce the chance of false flagging by making sure that the existing pr
surfaced by GitHub.issues_for_formula actually contains the exact formula name
in its title.

in case people expect to be able to find the prefix by only resolving
the symlink once (e.g., if they're using readlink not realpath)

Expand glob patterns.

Convert Language::Go test to spec.

Convert LanguageModuleRequirement test to spec.

Convert Utils::Bottles::Collector test to spec.

Convert Gpg test to spec.

Convert Download Strategies test to spec.

Docs for tag-based urls use preferred formatting

ARGV: add missing "--force" arg to formula_install_option_names

update-report: unlink rather than uninstall --force formula when migrating a formula to a cask

Added check for insecure mirror URLs

java_requirement: port to Linux and refactor