12.0.0-rc1

What's Changed

• Field definition commands by @Chi-teck in #5517
• Remove dual autoloader feature from global Drush installs by @greg-1-anderson in #5521
• Add YAML edit commands from YAML-CLI project by @weitzman in #5530
• Fix #5146. Document single file config import using config:set by @weitzman in #5543
• Follow the DI pattern used by Drupal Forms/Controllers/Blocks to instantiate Drush command classes by @greg-1-anderson in #5547
• Update the Drush commandfile generator to use create() by @weitzman in #5548
• Update docs for create() method by @weitzman in #5550
• Use own DrupalFinder which pulls path from Composer API by @weitzman in #5542
• Create a service adapter for drush.services.yml by @greg-1-anderson in #5553
• Static create commands by @greg-1-anderson in #5562

Full Changelog: 12.0.0-beta1...12.0.0-rc1