Cannot redefine property: $apollo when used with mixins #34
Description
Vue-apollo mixin registers beforeCreate hook and it's called multiple times with components that are using mixins which results in an error: Cannot redefine property: $apollo
Some other plugins have guards against double initialization: vue-resource/index.js#L13 or vue-router/install.js#L7
Vue.use() function (in /use.js#L8) is guarded against double install too.
Maybe some kind of if(this.$apollo) { return; } before you defineProperty would help?