v1.2.0

NEW - Question type - Implemented
NEW - Progress Bar improving (FPS optimizations) - Implemented
NEW - progressBarEasing option - Implemented
NEW - overlay, overlayClose and overlayColor options - Implemented
NEW - closeOnEscape option - Implemented
NEW - Progress Bar methods (start, reset, pause and resume) - Implemented
NEW - Typescript interface - Implemented
NEW - Gulpfile - Added
BUG - Timeout with pauseOnHover and resetOnHover cannot be used without progressBar - Fixed
BUG - Timeout for displaying each internal button - Fixed