Shellui

==================

added:
* ui.board.HLayout.update method
* ui.board.ElementState, ui.board.ActiveWidget and ui.board.StaticWidget classes
changed:
* ui.abstracts.BaseElement.build method
* ui.abstracts.AbstractLayout.add_element method
* hierarchy of ui.board.Label and ui.board.Button classes
* ui.board.HLayout.key_pressed method
* rename set_attribute, get_collection and run_method methods in core.typings.Collection class
* move ui.abstracts.AbstractWidget.output method to ui.abstracts.BaseElement class
deleted:
* ui.board.HLayout.adjust method
* ui.board.Button.is_active, Button.update, Button.on_click methods
* ui.board.Label.is_active method
* adjust, key_pressed, update and build methods in ui.abstracts.AbstractLayout class

==================

added:
* position argument in core.typing.Buffer dataclass
* position argument in ui.abstracts.AbstractWidget class
changed:
* format in debug_start function
* optimize import
* draw method in core.terminal.Terminal class
* build method in ui.abstracts.AbstractWidget class
* build and add_element method in ui.abstracts.AbstractLayout class
* event system in ui.abstracts module
* key_pressed method in ui.board.HLayout class
deleted:
* \_\_getitem__ method in core.typing.Collection class

==================

added:
* CHANGELOG.MD file
* README.MD file

First beta-release

Third alpha-release

Second alpha-release