Update dependencies 2019-04-21

Updating [wp-cli/cache-command](https://github.com/wp-cli/cache-command) (v2.0.1 => v2.0.2)
Updating [wp-cli/cron-command](https://github.com/wp-cli/cron-command) (v2.0.1 => v2.0.2)
Updating [wp-cli/db-command](https://github.com/wp-cli/db-command) (v2.0.1 => v2.0.2)
Updating [wp-cli/eval-command](https://github.com/wp-cli/eval-command) (v2.0.3 => v2.0.4)
Updating [wp-cli/extension-command](https://github.com/wp-cli/extension-command) (v2.0.3 => v2.0.4)
Updating [wp-cli/import-command](https://github.com/wp-cli/import-command) (v2.0.1 => v2.0.2)
Updating [wp-cli/media-command](https://github.com/wp-cli/media-command) (v2.0.2 => v2.0.3)
Updating [wp-cli/scaffold-command](https://github.com/wp-cli/scaffold-command) (v2.0.4 => v2.0.5)
Updating [wp-cli/search-replace-command](https://github.com/wp-cli/search-replace-command) (v2.0.1 => v2.0.2)
Updating [wp-cli/super-admin-command](https://github.com/wp-cli/super-admin-command) (v2.0.1 => v2.0.2)
Updating [wp-cli/wp-cli](https://github.com/wp-cli/wp-cli dev-master) (d56fbc2 => 7e504c0)

Author: schlessera