v1.1.0

• Add possibility to show multiple items per slide through the itemsPerSlide prop.
• Add possitiblity - when withLoop={true} - to define a starting position of the current active item through the initialStartingPosition prop.
• Add the possibility to set an initial active item through the initialActiveItem prop.
• Improve slideTo methods logic.
• Refactor event names removing the RSCJS prefix.
• Minor improvements.