CosmicMind/Material 1.36.0

Added NavigationBar & NavigationController

on GitHub

• Added class NavigationBar and NavigationController.
• Added contentsGravityPreset where appropriate, and now contentsGravity takes a String.
• Fixed issue-213, shadowPathAutoSizeEnabled now defaults to true, from false.

*** We are pleased to announce the addition of NavigationBar and NavigationController that support a navigation stack with back button handling. ***