updated android safe browsing, updated ios browser and SafariViewController options, added onSafeBrowsingHit event for android

Added ,  (available only for Android), Added ,  and  events to manage javascript popup dialogs only for Android now, added support for javascript dialogs popups for iOS

Added new WebView option minimumFontSize, Added new Android WebView options, Added new iOS WebView options, Added onGeolocationPermissionsShowPrompt event and GeolocationPermissionShowPromptResponse class (available only for Android), updated Android ContentBlocker, updated Android build.gradle compileSdkVersion 29

Updated onLoadResource event, Updated WebResourceResponse class, Deleted WebResourceRequest class, added useOnDownloadStart option, created webview options classes, added initial content blocking support

added onDownloadStart event, onLoadResourceCustomScheme event and resourceCustomSchemes option, onTargetBlank event and useOnTargetBlank option, code refactoring

updated plugin version, added new options to hide/show scrollbars #165, initial support for DownloadManager in Android and iOS

Update readme example

migrating to swift 5.0

Fix abstract method error  && swift version error

Create issue and pull request templates 

Resolving gradle error.

Android takeScreenshot does not work properly.

Remove async call in close Swift

Avoid null pointer exception after webview is disposed

Column does not accept null widget

This version of flutter_inappbrowser (1.2.1) breaks the gradle build, because the wrong link is set.

Remove headers_build_phase from example's Podfile

Fix crash on xcode 10.2

add new option to control the contentMode in Android platform

Fixes #106