Added new event onIncompleteFocus

[Evelyne28]

Hello!
I am working on a project and we're doing input validations on blur event. Our validation event is triggered before the InputMask 'onIncomplete' event, making our validation harder to implement.

I would suggest adding another event, 'onIncompleteFocus'. This would be similar to the 'onIncomplete' event, but would be triggered on Focus (as the 'onComplete' event).

For a mask like this: aaaa-9999, if the user enters 'abcd-1' and the next character entered is '2' then this event would be triggered (while the focus is still on).

[RobinHerbots]

@Evelyne28 ,

I can understand the need for instant validation. But maybe it is better to consolidate some event like oncomplete, onincomplete, onkeyvalidation and make some kind of onValidate which provides info like in the onkeyvalidation and also include a status which indicate complete or incomplete, ...