Pygame-menu

- Fix widget translation.
- Fix typo and docs.
- Improved resource size.
- Fix joypad left/right events.
- Added reset parameter to Menu clear method, 276.
- Fixed Menu mainloop background function save.
- Fixed TextInput cursor position and clock.
- Fixed pygame 1.9.3 support.

- Fix critical menu positioning error.
- Added ``BaseImage`` copy/deepcopy support.
- Fixed critical ``TextInput`` and ``ColorInput`` underline errors.
- Added Menu ``get_width`` method.
- Added ``get_thickness`` method to ``ScrollBar`` widget.
- Added ``\n`` support for Menu ``add_label`` method.

- Added ``PyInstaller`` support, 212, 264.
- Added ``pathlib.Path`` support on ``BaseImage`` and ``Image`` widget.
- Menu widget positioning fixes.
- Added ``SOUND_EXAMPLE`` to ``pygame_menu.sounds``.
- Fix ``ColorInput`` rendering.
- Improve docs and tests.

- Fixes 251, 252.
- Added v3 note.
- Improves docs.
- Added ``BaseImage`` methods ``get_path``, ``get_drawing_mode``, ``set_drawing_mode``, ``get_drawing_offset``, and ``set_drawing_offset``.
- New ``PYGAME_WINDOWCLOSE`` event locals.
- Fix several typing issues.
- Removed ``**kwargs`` from ``Menu`` constructor.
- Improve computation of max/min widget position.
- Improved widget positioning on Menu centering.
- New ``Menu`` method ``get_height`` and ``set_title``.
- New ``MenuBar`` widget method ``get_title_offset``.
- Fixed ``ScrollBar`` constructor parameter ``onchange``.
- New ``Widget`` methods ``get_position``, ``get_width``, ``get_height`` and ``get_size``.
- Fixed ``Selection`` ``get_height`` method.

- Fixed double widget background drawing, 246.
- New function ``is_event`` in ``pygame_menu.event`` module.
- New menu method ``set_onclose(onclose)`` and ``get_theme``.
- Added attributes to Menu.
- Now menu constructor copies the default theme.
- Set theme ``widget_background_inflate`` back to ``(0,0)``.
- Added widget ``selection_expand_background`` property and ``expand_background_inflate_to_selection_effect()`` method.
- Added ``set_backbox_border_width`` to ``MenuBar`` widget.
- Improve docs and tests.

- Docs fixes.
- Renamed ``BaseImage.apply_image_function`` ``func`` method to ``image_function``.
- Renamed widget method ``add_draw_callback`` ``func`` to ``draw_callback``.
- Renamed widget method ``add_update_callback`` ``func`` to ``update_callback``.