wayheming

Use wp_kses create custom contexts (like on space) with alowed html tags
Print image by wp default funtions not print <img>
Add alt="" for images generated by JS or static
Translate all strings
Use phpcs from WP with custom settings
Use jslint from WP
Not use <a> tag for buttons
Add aria-label="" for empty <a> tags
Try to use wp_remote_get() instead of file_get_contents()
Use phpdoc for all and use PHPDocumentator