[META] Lightning 8.x-2.18

• #2842170: Introduce concept of inline/one-off blocks
• admin/content view column order is inconsistent with rest of admin UI #429
• Hide API docs for bundle entities behind a config option
• #2672038: Support bulk media upload
• #2690423: Image cropping
• Migrate from Phing to Robo for build tools

Proposed Changelog:

• Added the ability to easily crop images contained in media entities and use the cropped version when embedding or selecting the media item. (Issue #2690423)
• Lightning Media now includes a bulk upload form that allows you to create multiple image media entities at once. (#2672038)
• You can now run Lightning's manual update steps via an interactive Drupal Console command. (GitHub #462)
• OAuth key pairs:
  • Lightning will no longer try to guess where keys should be stored and won't generate the keys until an administrator triggers that action. (GitHub #445)
  • Key pairs are now generated with 600 permissions. (GitHub #443)
  • Better error messages are shown if the system encounters an error when generating OAuth key pairs. (GitHub #440)
• Lightning no longer patches Drush and therefore has no opinion about which version of Drush you use in your project. (GitHub #459)
• Page manager is no longer included in the codebase. (GitHub #466)
• You can now choose to hide the links to API docs shown on entity bundles via a config option. (GitHub #435)
• Fixed a bug where Entity Browser filters might not work after updating to core 8.3.7. (GitHub #441)
• Operations is now the last column on the admin/content view. (GitHub #429)