Homebrew's actually ended up using a fair few gems. While we want to avoid Bundler at runtime (and this PR still does that, in fact uses Bundler even less at runtime than it did before) writing our own version to use at build-time seems redundant.
- Tweak the way offline skipping happens - Skip more tests that break when offline - Hide more stdout output from tests.
Hbc.path
CaskLoader.path
:cask
brew tests
