Minor updates. Replace super() with direct class reference. Add demo_colors.

Clean up Emitter class, simplify event handling. Fix Container.focusnext() method. Add events test (handler auto-registration, order).

Add Widget.spot property. TreeView: move spot with cursor node. ScrollView: scroll when spot moves.

Rename emitter module to events.

Make Container.layout a property.

Update Emitter: All event handlers now have exactly one argument: object inherited from Event class, which carries any data.

Add ScrollView widget. Update Emitter, rename "on_event" methods to "_handle_event". Update VScrollbar, Layout.

Fixes.

Documentation, fix names of focus methods.

Clean up and update TreeView.

Update docs.

Fix mousewheel.

Update event propagation, keypress event, focusing.

Refactoring: rename eventsource module to emitter.

Clean up, refactoring. Rename EventSource to Emitter, begin merging emit() method with handle().

Update PyGame driver.

Add setup script. Add Checkbox widget + demo. Updates.

Import only one driver from application.

DriverPygame: output to character buffer, draw whole screen at once.

DriverPygame: add colors, make window resizable.

DriverPygame: add mouse events and key press autorepeat.

Partial DriverPygame.putch() implementation. Add patch for PyGame implementing font.render_glyph(). Add test for PyGame font module. Add special key definitions to DriverPygame.

Add DriverPygame (incomplete). Move unicode graphics constants to UnicodeGraphics class. Move shared parts of drivers to Driver base class.

Rename BackendCurses to DriverCurses. Add DriverDummy - dummy driver for debugging purposes. Move clipping stack from driver to common.ClipStack class.

Update TableView: cursor movement.

Add TableView plus demo.

Update utf8 character input to Python3. Reorganize tests.

Update demos and tests.

Eliminate relative imports.

Handle curses resize event.