Astra Pro - Extend Astra Theme With the Pro Addon 4.6.4

- New: Gradient color option for background control in customizer. ( New Color Controls in Astra theme & Astra Pro Addon )
- Improvement: Color, Responsive Color, Background & Responsive Background control now uses Gutenberg's control in customizer. ( New Color Controls in Astra theme & Astra Pro Addon )
- Improvement: All custom controls HTML markup was loading from PHP, which is now moved to React JS for better and optimized customizer performance. ( Astra 2.6 - Bringing Faster Customizer and Better Color Controls )
- Fix: Infinite scroll was loading all types of posts on the blog page.
- Fix: PHP fatal error while previewing other themes in customizer when Astra Pro is activated.

- Improvement: File Generation code improvements.
- Fix: Custom Layouts translations not working with Polylang plugin.

- Fix: WordPress 5.5 Customizer JS error related to addons.
- Fix: Mega Menu and Page Header - Color picker compatibility with WordPress 5.5.
- Fix: Up/Down arrow appearing for Page Header settings with WordPress 5.5.
- Fix: Bulk activation/deactivation of Addons misprint text for their status.