Setting navigation view colors only works if the view has an active navigation session running. This PR modifies how map styling is controlled in the native iOS code. The styling data is now stored and applied to the navigation view after the navigation session is attached.
Fixes #246
[x] Tests pass
[x] Appropriate changes to documentation are included in the PR
Setting navigation view colors only works if the view has an active navigation session running. This PR modifies how map styling is controlled in the native iOS code. The styling data is now stored and applied to the navigation view after the navigation session is attached.
Fixes #246