New in 0.12.0-rc2

• Support staggering transitions for v-repeat. demo

Simply add a stagger attribute:

    <div v-repeat="list" v-transition="fade" stagger="100">

Enter and leave stagger can be defined separately as `enter-stagger` and `leave-stagger`. The stagger can also be dynamically calculated via a javascript hook:

    Vue.transition('fade', {
      stagger: function (index) {
        // increase delay by 50ms for each transitioned item,
        // but limit max delay to 300ms
        return Math.min(300, index * 50)
      }
      // or you can use `enterStagger` and `leaveStagger`
    })

• Support expressions in content selectors. (resolved only once) e.g.

  <content select="p:nth-child({{$index + 1}})"></content>`

• v-class can now accept an object value. The keys will be used as class names and toggled based on the truthy-ness of the value.
• Warnings in debug mode now prints the error stack instead of invoking the debugger statement.

Potentially breaking changes

• When v-ref is used together with v-repeat, and the value being repeated on is an Object, the corresponding ref will also be an Object, with its keys pointing to the associated child instances.
• Transition cancel hook: you can now use enterCancelled and leaveCancelled hooks to handle a cancelled transition. Functions returned in enter and leave hooks are no longer respected.

Fixed

887, #892, #893