Update lightgallery.js
Update lightgallery.js

Add onAfterOpen.lg event
Backstabe/lightGallery,masterpowers/lightGallery,UmarMughal/lightGallery,UmarMughal/lightGallery,filipepaladino/lightGallery,Backstabe/lightGallery,filipepaladino/lightGallery,stormbreakers/lightGallery,masterpowers/lightGallery,stormbreakers/lightGallery,VladimirGavrilov/lightGallery,VladimirGavrilov/lightGallery,euginepj/lightGallery,euginepj/lightGallery