Update Event.hashchange
Update Event.hashchange

- assign undefined to global.onhashchange

kdzwinel/polyfill-service,mcshaz/polyfill-service,jonathan-fielding/polyfill-service,jonathan-fielding/polyfill-service,kdzwinel/polyfill-service,mcshaz/polyfill-service,JakeChampion/polyfill-service,kdzwinel/polyfill-service,JakeChampion/polyfill-service,jonathan-fielding/polyfill-service,mcshaz/polyfill-service