2.1.3 + Added method to retrieve widgets aligned with one another horizontally and vertically. 2.1.2 + Added ShapeCorona and related builders. + Refactoring of the BaseWidget to include a shape. + Bug fixed for the spatial classes. 2.1.0 + Adding event broadcaster for TUI context events. + Added spatial handler to handle spatial positioning of tangibles. 2.0.0 + Added abstraction layer (Adapter) to decouple core from the tangible protocol (TUIO) + Added network abstraction layer and implemented concrete examples (Bluetooth, Wifi, and Serial IO)