Added helper to retrieve local cached tags

• Added helper to retrieve local cached tags

Added nonnull, nullable annotations

Added nonnull, nullable annotations which corrects Swift behaviour.

Improvements to app tracking and added warnings

• Add log entry if NSBluetoothPeripheralUsageDescription is not set but suppressing the location accuracy bluetooth popup is active
• Improvements in skipping and forcing regular app checks

Changed location permission behaviour

• Before 1.9.0 the SDK only asked for "always" location permissions if the askForLocationPermission flag was set
• From 1.9.0 on the SDK asks for the location permission indicated in the application plist by the developer using NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription

Slimmed down initialisation process and added swift support

• Swift support
• Slimmed down initialisation process

Optimise resource usages on background wake up

Stripped down init code during background wake up to a minimum to save time and resources while waking up in background.

Changes to local regions registration

Changes:

• all regions are now prefixed with GL_ which makes it easy to keep track of Glimr regions
• improved code flow for region registration and monitoring using less resources while being more fault tolerant
• changes to cases when switching from or to background while tracking and active region

Important:
since we introduced our own prefix, it's important to know that we will purge all registered regions the first time if you are using KATConfiugration.shareRegions

Improvements and fixes to updating monitored regions

• Logs showed that updating regions was not performed under certain circumstances, that caused problems setting new regions.
• Updating monitored regions while in background

Added option to track CLVisit events (beta)

Added option to track CLVisit events (beta)

Custom response format for audience tags

Custom response format for audience tags.