Fixed out-of-bounds crash with #date tag

[ezfe]

The #date tag did not properly default the second parameter.

Using #date(someDate) would cause an out-of-bound error on the tag.parameters array, since out-of-bound indexes do not return optionals.

This checks that the parameters array has two elements before trying to get the second parameter.

[penny-coin]

Hey @ezfe, you just merged a pull request, have a coin!

You now have 2 coins.

[tanner0101]

Thanks!