Swift 5.0 Support

Added Swift 5.0 Support

Swift 4.2 Support

Added Swift 4.2 Support

Swift 4 Support

Added Swift 4 support

Made some methods open

Made some methods open to make them overridable.

Carthage Support and Project Reorganization

• Added Carthage Support
• The example project no longer requires CocoaPods
• CTShowcaseView now updates its location whenever the frame of its target view changes
• CTShowcaseView automatically gets dismissed if less than %75 of its target view is visible when the Showcase is displayed.
• Improved API naming

Bug fix in DynamicGlowHighlighter

DynamicGlowHighlighter now clears the entire circular region instead of half of it before drawing the actual highlight

Swift 3 migration

Migrated the code to Swift 3. All methods now conform to the Swift 3 API design guidelines.