Updated Android context menu workaround, updated iOS onCreateContextMenu event, Added Android keyboard workaround to hide the keyboard when clicking other HTML elements

added HeadlessInAppWebView class, added close, addMenuItem and addMenuItems methods to ChromeSafariBrowser, added ChromeSafariBrowserMenuItem class, fixed InAppWebView.channel null exception on android, fix #305, fix #245, fix #299

>  onLongPressHitTestResult event, updated test cases, fixed Promise polyfill, fixed android options

updated shouldOverrideUrlLoading event for #146, added print method and event #128, fix #123 javascript handler for Android API <= 22, renamed onTargetBlank to onCreateWindow event, deleted useOnTargetBlank option, added supportMultipleWindows android option, added getDefaultUserAgent static method, Updated default value for domStorageEnabled option to true

Fixed error 'java.lang.ClassCastException:  cannot be cast to android.view.WindowManagerImpl' on Android when using native alert dialogs, updated README.md with Xcode version required

Added shouldInterceptAjaxRequest, onAjaxReadyStateChange, onAjaxProgressEvent and shouldInterceptFetchRequest events, added useShouldInterceptAjaxRequest and useShouldInterceptFetchRequest webview options, updated node.js server test, added injectJavascriptFileFromAsset and injectCSSFileFromAsset methods, renamed some methods

added getHtml method, updated android config, remove block on long press webview android, fixed other issues