RDVTabBarController Versions Save

Updated to work with Xcode 11 and iOS 13.

Compatibility with iOS 8+, Xcode 10

• Fix an issue where tabBarItem's title frame was calculated only based on the font size, ignoring kerning

• Replace strong reference to delegate inside RDVTabBar with weak reference, fix a bug with wrong sized view when starting in landscape orientation
• Fix an orientation bug in iOS 8, restore tab bar hidden to last state

Replace strong reference to delegate inside RDVTabBar with weak reference, fix a bug with wrong sized view when starting in landscape orientation.

Add support for translucent tab bar.

• Improve storyboard support
• Use tabBarHeight if minimumContent Height is not set

• Add storyboard support, redraw badge after changing its value
• Set tabBarController as associated object to UIViewControllers

• Always return the root tabBarController no matter how deep the controller hierarchy is
• Fixed animations for showing and hiding of the tabBar

• Fix a bug where the tabBarHidden property is ignored.
• Set default value for selectedTitleAttributes.