1.6

Multiple text inputs now supported

- New method on URBNAlertViewController: `textFieldAtIndex:`. This is how you access a certain textfield if you have multiple - New method: `startLoadingTextFieldAtIndex:` - The property `textField` on URBNAlertViewController still exists, and simply accesses the textfield at index 0; the same goes for `startLoading`

Cancel action type added

- `URBNAlertActionTypeCancel` added. Actions of this type, when buttons do not become disabled - New style properties for a disabled button - You can now also call `setEnabled:` on a URBNAlertAction to disabled it; if its a button