Vuetify v-textfield mask extension

[modys]

Hi everybody, im not a 5 point expert on github but may can share my wish and advice here..
Will be cool if Vuetify dev Team can add different masks to e.g "not-a-letters" or "not -a-numbers" for example.
So if user will try to enter letters in Phone field this will ignore.. or numbers in name field..
I know can install that as custom dependence but this small extension will be really helpful.

Thanks :)