v4.0.1 Swift 2.2 support

Improvements:

• Updated swift library to swift 2.2.
• Optimized movement calculation when hardware keyboard is attached.

Features:

• Added reloadInputViews method.
• Added RTL language direction support for next/previous images.
• Added support for third party customized textView/textField by adding addTextFieldViewDidBeginEditingNotificationName:didEndEditingNotificationName method.
• Added disabledDistanceHandlingClasses, enabledDistanceHandlingClasses, disabledToolbarClasses, enabledToolbarClasses, toolbarPreviousNextAllowedClasses, toolbarPreviousNextDeniedClasses, disabledTouchResignedClasses, enabledTouchResignedClasses properties.
• Added IQPreviousNextView class to Improve Next Previous experience for all inner deep responder subviews.

Deprecations and Removed:

• Deprecated disableDistanceHandlingInViewControllerClass, removeDisableDistanceHandlingInViewControllerClass, disableToolbarInViewControllerClass, removeDisableToolbarInViewControllerClass, considerToolbarPreviousNextInViewClass, removeConsiderToolbarPreviousNextInViewClass methods and replaced with NSMutableSet properties.

Documentation:

• Updated README.