[Feature Request] Implement v-model.lazy for inputs

[tommybravo]

Problem to solve

There are times when you don't want your model to update on every "input" event, "change" events would do the trick. VueJS itself has the "lazy" modifier for v-model that seem to not work in custom components.

Proposed solution

An additional "lazy" prop for input elements.

[iec989]

Will this be part of the 2.0?

[KaelWD]

Duplicate of https://github.com/vuejs/vue/issues/6914