v2.2.0

• now real input won't be hidden, just off screen (hopefully this will prevent clearing input on browser back page)
• minor fix on toggle
• valueProperty now accepts array of properties to pick from object item as value
• visibleProperties accepts string with placeholders
• added garbage collector for cache to prevent filling all localStorage available storage space
• gc runs on init only
• don't hide input container when there's no values
• minor fix for init event
• accept number value (converting it to string)
• minor backspace value removal fix
• other minor fixes and improvements