NatShare 1.3.0

• Added SavePayload support on the WebGL platform.
• Added SavePayload.RequestPermissions static method to request gallery permissions ahead of time.
• Added SavePayload.album field for inspecting the album that was specified when creating the payload.
• Added SavePayload.Supported static field for checking whether the platform supports the payload.
• Added SavePayload.Dispose method for explicitly disposing payload regardless of whether it was saved.
• Added SharePayload support for sharing images with transparency.
• Added SharePayload support for reporting the payload receiver chosen by the user.
• Added SharePayload.Supported static field for checking whether the platform supports the payload.
• Added SharePayload.Dispose method for explicitly disposing payload regardless of whether it was shared.
• Added NatShare settings menu in project settings, under NatML > NatShare.
• Added Embed AndroidX project setting for preventing duplicate errors when embedding AndroidX native library.
• Fixed share payload task not completing when user canceled sharing action on Android.
• Refactored top-level namespace from NatSuite.Sharing to NatML.Sharing.
• Deprecated SharePayload.Commit method. Use SharePayload.Share method instead.
• Deprecated SavePayload.Commit method. Use SavePayload.Save method instead.
• Removed ISharePayload interface.
• Removed experimental PrintPayload.
• Updated NatShare license from MIT to Apache 2.0.
• NatShare now requires iOS 14+.