Mapbox Navigation SDK v0.8.0

Release Includes

• Update Maps SDK to 5.3.0 #617
• Expose listeners in the NavigationView #614
• Null check light / dark theme from NavigationLauncher #613
• Add SSML parameter to Polly request #612
• Allow theme setting from NavigationViewOptions #595
• Fix issue NavigationView simulation #594
• Remove preference setup for unit type in RouteViewModel #593
• Create other map issue in feedback adapter #592
• Remove specified layer for map route #590
• Guard against IndexOutOfBounds when updating last reroute event #589
• Set original and current request identifier #585
• Add SSML announcement option for VoiceInstructionMilestone #584
• Remove duplicate subscriptions to the ViewModels #583
• Return Milestone instead of identifier #579
• DirectionsProfile for reroutes in NavigationView #575
• Add custom notification support #564