Check if value is an array without using jQuery
Check if value is an array without using jQuery

Uses same method as [jquery](https://github.com/jquery/jquery/blob/555a50d340706e3e1e0de09231050493d0ad841e/external/requirejs/require.js#L46)
ablipan/vue-validator,vuejs/vue-validator,zOxta/vue-validator,zOxta/vue-validator,rohmad-st/vue-validator,ablipan/vue-validator,rohmad-st/vue-validator,kazupon/vue-validator,vuejs/vue-validator,kazupon/vue-validator