features 8.x-3.7

Along with 8.x-3.6, this release updates Drush support to Drush 9. The release also includes many bug fixes and improved test coverage.

Reverts an improvement included in 8.x-3.5 as that triggered #2948432: Circular reference detected for service "features.config_save_subscriber".

Changes since 8.x-3.6:

• #2789001 by nedjo: revert previous commit as it can trigger a ServiceCircularReferenceException

Changes since 8.x-3.5:

• #2845779 by nedjo, JeffM2001, smustgrave, mpotter: Config dependency should be added only for required config
• #2934410 by nedjo, bserem: Dependencies should not be added for uninstalled modules when calculating inter-package dependencies
• #2861830 by nedjo: checkbox "Mark all config as required" should stay unchecked after feature creation
• #2615634 by nedjo: clean up remaining bundle call using empty string
• #2902966 by nedjo, kerasai: Inter-Package Dependencies Set for Optional Config
• #2891353 by nedjo: Regression: "excluded" configuration should not be automatically packaged
• #2860993 by nedjo: add test coverage for excluded and required properties
• #2947658 by nedjo: All features listed on admin screen when default bundle selected
• #2789001 by nedjo: Set default bundle for site
• #2867840 by nedjo: Site install reports features bundle automatically created when it's later imported
• #2845444 by nedjo: Dependency detection for simple settings exports
• #2934410 by nedjo: Dependencies should not be added for uninstalled modules
• #2913651 by fgm, Grimreaper, moshe weitzman: Drush 9 Incompatibility
• #2891356 by nedjo: Update FeaturesInstallStorage for changes in core 8.3+
• #2858909 by dsjordan, Grimreaper: Features 3.4 causes test failures due to schema validation exceptions