The validation classes are not applied.

[kcsujeet]

I've set up the classes globally as:

`
Vue.use(VueFormulate, {
classes: {
outer: 'form-group',
select: 'custom-select',
help: 'form-text text-muted small',
errors: 'text-danger',
inputIsValid: 'is-valid',
inputHasErrors: 'is-invalid',
},
})

`

But the is-invalid class is not applied to wrapper or the input.