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.
TreeView
========
.. toctree::
:maxdepth: 3
:titlesonly:
.. automodule:: tuikit.treeview
:members:
:show-inheritance:
Path
----
The path may be string or list. Components are names or indexes.
String path uses slash char as separator, names as components.
Examples:
* '/'
* '/a/b/c'
* ['a', 'b', 'c']
* [0, 3, 1]