Passing an integer or boolean to string validation succeeds

[tjcobb]

I have the rule

{
    'lastName': 'required|string'
}

but using

{
    'lastName': 1
}

or

{
    'lastName': true
}

passes the rule.

However, using

{
    'lastName': []
}

fails

[bitnbytesio]

Fixed under next release (3.2-rc3)