Add support for VC specific loglevel

Xcode upgrade version

Re-export Published & ObservableObject

Fix dismissing a sheet (issue #6)

NavigationController: Fix macOS compilation

NavigationController: Support navigationViewStyle's

Improve debug logs and description

Derive loglevel from LOGLEVEL env variable

Fix presentation hierarchy in debug view

GHActions: Bump requirement to Xcode 13.2

GHActions: Add non-SPM test targets for static lib

Drop the explicit sheet/nav presentations

Add more documentation, comments

Tie the `PushLink` destination to the specific VC

Typo