Widget area select
Merge branch 'master' of github.com:axisthemes/axis-builder
Utilize esc_html()
Display sidebars in select area of Widget Area shortcode
Custom styles for select option
Recalculate shortcode if select element change (eg:- Widget Area shortcode)
[Add] Abstract method shortcode_wrapper for frontend render
Improvement for shortcode wrapper
[Add] Method shortcode_handle in each shortcode class
[Fix] Nested shortcode