v4.0.0

DOM

• Feature: more styles:
  • strikethrough
  • underlinedDouble
• Feature: Customize the cursor. Add the following decorators:
  • focusCursorBlock
  • focusCursorBlockBlinking
  • focusCursorBar
  • focusCursorBarBlinking
  • focusCursorUnderline
  • focusCursorUnderlineBlinking
• Bugfix: Fix focus/select when the vbox/hbox/dbox contains a
  flexbox
• Bugfix: Fix the selected/focused area. It used to be 1 cell larger/longer than
  requested
• Bugfix: Forward the selected/focused area from the child in gridbox.
• Bugfix: Fix incorrect Canvas computed dimensions.
• Bugfix: Support vscroll_indicator with a zero inner size.
• Bugfix: Fix vscroll_indicator hidding the last column.

Component:

• Feature: Add the Modal component.
• Feature: Slider supports taking references for all its arguments.
• Feature: Slider supports SliderOption. It supports:
  • multiple directions.
  • multiple colors.
  • various values (value, min, max, increment).
• Feature: Define ScreenInteractive::Exit().
• Feature: Add Loop to give developers a better control on the main loop. This
  can be used to integrate FTXUI into another main loop, without taking the full
  control.
• Feature: Input supports CTRL+Left and CTRL+Right
• Feature: Use a blinking bar in the Input component.
• Improvement: The Menu keeps the focus when an entry is selected with the
  mouse.
• Bugfix: Add implementation of ButtonOption::Border(). It was missing.
• Bugfix: Provide the correct key for F1-F4 and F11.
• Feature: Add the Hoverable component decorators.

Screen

• Feature: add Box::Union(a,b) -> Box
• Bugfix: Fix resetting dim clashing with resetting of bold.
• Feature: Add emscripten screen resize support.
• Bugfix: Add unicode 13 support for full width characters.
• Bugfix: Fix MSVC treating codecvt C++17 deprecated function as an error.

Build

• Support using the google test version provided by the package manager.