NSAttributedString support in UIKit Radio Button

• The labels in Radio Buttons now support NSAttributedString

What's Changed

• [Component] Tag: update demo by @robergro in #189
• Feature/component/radiobutton uikit attributedstring by @michael-zimmermann in #190
• [Code] Remove FullColorToken by @robergro in #196
• Dynamic theme switching by @janniklasfreundt in #170

Full Changelog: 0.6.4...0.6.5