v3.13.9

Changed

• Add "sort" plugin #4137
• Add missing plugin warnings #4158
• Change to x-sort:item, add sorting class to body, and use x-sort:group #4161
• Remove extra destroyTree call #4151
• Fix x-on with both self and once #4152
• Documentation issue: Event name in code snippet and description doesn't match in dispatch.md #4141
• Fix some typos #4134
• Chore: remove repetitive words #4132