Add ScrollWindow. Rewrite EditBox to work with OffsetLayout. Add propery "exposed" to DrawEvent. Add Widget._view_size. Add config file (driver, log_level).

Add mousehover event (only SDL).

DriverSDL: Fix event dispatching. Add SDL events test.

Report mousemove relative position change. Window: when in AnchorLayout, aligned right/bottom - fix resizing by mouse to behave as expected.

Update drivers: Rename setcolor to defcolor, add real setcolor which ignores color stack. Application: Add overridable startup() method. Fix Widget draw clipping.

Add sdlterm to setup.py. Simplify color description, allow missing bg.

DriverCurses: filter mousemove - generate event only when coordinates changes.

DriverSDL: add support for key modifiers.

Fix.

DriverCurses: Add support for key modifiers.

Drop Container.offset, add special layout for that - OffsetLayout. Add Widget.bring_up(): moves child to end of children list.

Rework MenuBar. Add MenuButton. Add mouse event cascading to floaters. LinearLayout: spacing now applies to all children, not just those with expand. Fix Window resize request inside layouts. UnicodeGraphics: prepare for styling/theming.

Rework layouts: Layout is now normal Container which places its children upon resize event. Drop TopWindow, top is now any subclass of Container. Add floater concept: floaters are widgets drawn over normal widgets, not clipped by parent. Add HScrollbar and Scrollbar abstract base class.

DriverSDL: Fix.