Vue.set(obj, key, val) now returns the set value.
Inline statement handlers for a v-on on component custom events now has access to the special $arguments property:

  <my-component @some-event="handle($arguments[0])"></my-component>

  // inside my-component
  // parent's `handle` method gets 'hello!' as the argument
  this.$emit('some-event', 'hello!')

#1929 fix character escaping in expressions
#1935 fix parsing expressions with dynamic subpath in the form of ['prefix'+i+'suffix']
#1946 fix transclusion class merging in IE9
#1960 fix class interpolations not working with transitions
#1965 (1) fix default <slot> not rendering correct content when another named slot is present, and when both slots are inside a v-if fragment.
#1965 (2) fix default <slot> not rendering fallback content when all other content has been selected by named slots.
#1966 fix $destroy(true) not triggering "detached" hook on nested children (@tgeorgiev)
#1985 fix v-model checkbox/radio initial value issue (only happens with the combination of v-for and Chrome's overly-smart back button input state restoration behavior)
#1995 fix Observer error when using vue-router in Android 5.0 (should be a bug in Android 5.0 but we can work around it)