v4.3.0

• Added better integration for Swift

  - Added Nullability Attributes
  - Added modulemap file
  - Added sample app in Swift
  

• Refactored PPMetadataSettings

  - Added debug metadata settings for debugging payslip detection and image processing
  - `successfulScanFrame` renamed to `successfulFrame`
  - `currentVideoFrame` renamed to `currentFrame`
  

• Exposed PPModernViewfinderOverlaySubview overlay subview class in public headers. This enables you to more easily recreate default overlay UI in your custom Overlay view controllers.

• in PPCoordinator, renamed method isScanningUnsupported: to isScanningUnsupportedForCameraType:error:. This was introduced to provide more granularity in checking if scanning is supported.

• PPOverlayViewControllerchanged the way Overlay Subviews are added to the view hierarchy. Instead of calling addOverlaySubview: (which automatically added a view to view hierarachy), you now need to call registerOverlaySubview: (which registers subview for scanning events), and manually add subview to view hierarchy using addSubview: method. This change gives you more flexibility for adding views and managing autolayout and autoresizing masks.

• Localization Macros MB_LOCALIZED and MB_LOCALIZED_FORMAT can now be overriden in your app to provide completely custom localization mechanisms.

• Increased speed of scanning cancellation when Cancel button is pressed.