YITH WooCommerce Product Add-ons Premium 4.18.0

New: TheGem theme support
Tweak: Add-ons panel loading speed optimization
Update: YITH Plugin Framework 3.1.21
Fix: Missing variation-gallery.php template
Fix: Grouped products support
Fix: Minor bugs

New: WooCommerce Currency Switcher support
Update: Language file
Update: YIT Plugin Framework 3.1.15
Dev: Allow external plugins to save custom options array
Fix: Composite Product component variation price reset
Fix: Required options
Fix: Admin menu
Fix: Minor bugs

New WordPress 5.0 support
New Divi theme support
New Woo Layout Injector plugin support
New Plugin options to enable compatibiliy
Update All .po files
Update YITh Plugin Framework 3.1.5
Dev Improved WPML support with required variations
Fix Number add-ons "min" value problem
Fix Variations and attributes disappear after saving
Fix Minor bugs