New version API only in success/upgradeneeded handlers
New version API only in success/upgradeneeded handlers

jensarps/IDBWrapper,rubenstolk/IDBWrapper,safetychanger/IDBWrapper,rubenstolk/IDBWrapper,mizchi/idb-wrapper-promisify,GerHobbelt/IDBWrapper,jayfunk/IDBWrapper,jayfunk/IDBWrapper,kilbot/IDBWrapper,kilbot/IDBWrapper,safetychanger/IDBWrapper,jensarps/IDBWrapper,mizchi/idb-wrapper-promisify