Various files are being included that aren't needed. They only make the
package bigger.
HISTORY.md is a subset of CHANGELOG.md. CODEOWNERS is just a marker for
Github to assign reviewers. bin only contains binstubs for bundler so
really bad to include. contrib only contains a pre-commit hook, but if
you're not using git this doesn't make sense. .fixtures.yml is only
needed when running tests
It also adds NOTICE as a license file.
rspec as a build dependency is removed since no tests run. It can't run
them because it needs puppet, but puppet requires this package leading
to a dependency cycle. That's documented now.