1.4.0

- Lazily install repositories.

- When running `pre-commit run <hookid>`, pre-commit will only install

the necessary repositories.

- #637 issue by @webknjaz.

- #639 PR by @asottile.

- Version defaulting now applies to local hooks as well.

- This extends #556 to apply to local hooks.

- #646 PR by @asottile.

- Add new `repo: meta` hooks.

- `meta` hooks expose some linters of the pre-commit configuration itself.

- `id: check-useless-excludes`: ensures that `exclude` directives actually

apply to *any* file in the repository.

- `id: check-hooks-apply`: ensures that the configured hooks apply to

at least one file in the repository.

- pre-commit/pre-commit-hooks#63 issue by @asottile.

- #405 issue by @asottile.

- #643 PR by @hackedd.

- #653 PR by @asottile.

- #654 PR by @asottile.

- Allow a specific repository to be autoupdated instead of all repositories.

- `pre-commit autoupdate --repo ...`

- #656 issue by @KevinHock.

- #657 PR by @KevinHock.

- Apply selinux labelling option to docker volumes

- #642 PR by @jimmidyson.