Almost everywhere pointers are used, but not [here](https://github.com/google/go-github/blob/e740a6811a5bc7a8fba64fe1594860d4f982b4c3/github/issues.go#L36). The type is `[]Label`. The similar struct for PRs [has](https://github.com/google/go-github/blob/e740a6811a5bc7a8fba64fe1594860d4f982b4c3/github/pulls.go#L33) also a type of `[]*Label`. Is this intentional?
Almost everywhere pointers are used, but not here. The type is
[]Label. The similar struct for PRs has also a type of[]*Label.Is this intentional?