New Features
- Implement multi selection in Grid #2522
- Add the TemplateRenderer class, change the Grid to use the renderers. #2646
- Webjars added into Flow #2634
External contributions
Big thanks to @heruan for dealing with all help wanted initial tasks!
Breaking changes
- AttachEvent and DetachEvent are in ui.common, while most of the other events are in ui.event #2655
- Weird package name for Transport class #2651
- Use webjars bom. #2715
Breaking changes rearrange classes in the packages and require you to import a bom file into the project if you're using the flow-components module (webjars usage documentation page explains the details)