Redesign for the v1 stable release (#3)

Only half done. Will continue in another PR.

Reviewed-on: #3

crates/ui/src/lib.rs

@@ -1,11 +1,12 @@
+pub use element_ext::ElementExt;
 pub use event::InteractiveElementExt;
 pub use focusable::FocusableCycle;
 pub use icon::*;
 pub use kbd::*;
 pub use menu::{context_menu, popup_menu};
-pub use root::{ContextModal, Root};
+pub use root::{window_paddings, Root};
 pub use styled::*;
-pub use window_border::{window_border, WindowBorder};
+pub use window_ext::*;
 
 pub use crate::Disableable;
 
@@ -15,7 +16,6 @@ pub mod avatar;
 pub mod button;
 pub mod checkbox;
 pub mod divider;
-pub mod dock_area;
 pub mod dropdown;
 pub mod history;
 pub mod indicator;
@@ -25,20 +25,19 @@ pub mod menu;
 pub mod modal;
 pub mod notification;
 pub mod popover;
-pub mod resizable;
 pub mod scroll;
 pub mod skeleton;
 pub mod switch;
-pub mod tab;
 pub mod tooltip;
 
+mod element_ext;
 mod event;
 mod focusable;
 mod icon;
 mod kbd;
 mod root;
 mod styled;
-mod window_border;
+mod window_ext;
 
 /// Initialize the UI module.
 ///