3.4.0

Features

• Added renderOnlyVisible option, which can dramatically increase performance when there're many panels.
• Added isEqualSize and isConstantSize option.
  • isEqualSize(boolean | string[]) option can skip panel size recalculation, which can increase performance when adding a panel or resize().
  • isConstantSize(boolean) option will assume that panel's size won't change after resize. It can increase the performance of resize().
  • See FlickingOptions for more info.
• Added useOffset option. This will use offsetWidth instead of getBoundingClientRect, so it can calculate panel's original width when CSS transform is applied to panel.
  • ⚠️ Using useOffset when the panel's size is not integer can lead to 1px white space between panels.
• Added fill() method for needPanel event, which makes user to add panel easily without considering event direction.