Possible memory reference cycle

[gunt3001]

Hi!

I ran into a memory leak in my project earlier and I tracked it down to -setupLabel. I found out that issue #23 is still there because the line

if ([notification.userInfo objectForKey:@"delegate"] == self.window) {

still refers to self instead of weakSelf

I'm pretty new with Objective-C, so I apologize if I'm mistaken.
Anyway, thanks for the great work.

[cbpowell]

Good catch, thanks! Incorporated this fix into v1.4.1.