v 1.3.2 notice

Since version 1.3.2, these things will be change, breaks.

Deleted

html5shiv.js, html5shiv.min.js, respond.min.js have been deleted.
fix-bootstrap.css has been deleted.

Moved

These folders and files inside them have been moved.
css, fonts, img, js have been moved into assets folder.

Added/New

The modern Bootstrap 3 has been added. It use modern CSS variable, functions, syntax, but it is not loaded by default. You have to use filter hook bootstrap_basic_use_modern_bootstrap and set value to true to load it instead of original Bootstrap 3.4.1.

Example of code you should use in your theme or plugin.

add_filter('bootstrap_basic_use_modern_bootstrap', '__return_true');

Release note: https://github.com/Rundiz-WP/bootstrap-basic/releases/tag/1.3.2

To fix:

If you previously do something like this.

wp_dequeue_style('bootstrap-style');
wp_enqueue_style('bootstrap-3', trailingslashit(get_template_directory_uri()) . 'css/bootstrap.min.css');
wp_enqueue_style('my-theme-main-style', trailingslashit(get_stylesheet_directory_uri()) . 'assets/css/main.min.css', ['bootstrap-3']);

You are doing it wrong and it will cause your theme breaks!
Replace with this.

// the commented out code below can be remove them entirely.
//wp_dequeue_style('bootstrap-style');
//wp_enqueue_style('bootstrap-3', trailingslashit(get_template_directory_uri()) . 'css/bootstrap.min.css');
wp_enqueue_style('my-theme-main-style', trailingslashit(get_stylesheet_directory_uri()) . 'assets/css/main.min.css', ['bootstrap-style']);