IMPORTANT: Multiple classes are now added if field value contains spaces (this is not applied for entity reference field types).
Issue #2919351 by kyberman: Functional tests
Issue #3001544 by aimevp: Field "x" is unknown
Issue #2944333 by Murz, kyberman: Add support of multiple css classes in one field
First release candidate for version 8.x-2.x of the module. This version contains an upgrade path from version 8.x-1.x, so that users can upgrade from the earlier version of the module.