Ability to open without a click event.

[zhegwood]

Would like the ability to programmatically open the datepicker modal without a click event using something like this.$refs.mydatepicker.open().

[mixset]

@mariomka Do you plan to add such possibility? It would be very useful

[tripflex]

I added support for this in my fork https://github.com/tripflex/vue-datetime