- For cops with a styleguide link, where there's evidence that we want
  the rule to apply, we don't need to also explicitly declare
  `Enabled: true` for each of them. Since we removed `DisabledByDefault`,
  the enablements here for cops that are *enabled by default in RuboCop
  itself** are redundant.
- I could have gone further and removed the rules that RuboCop has
  enabled by default that _didn't_ have a styleguide link, but I feel
  like we need some evidence for why a rule is in place first for when
  people come looking at this gem's config to figure out why new rules
  are suddenly failing or not.