SmolStr: DerefPure

[bend-n]

enables matching on smolstrs directly.

before:

match Some(smolstr) {
   Some(x) if x == "y" => {},
   _ => {}
}

after:

match Some(smolstr) {
   Some("y") => {},
   _ => {}
}

[ChayimFriedman2]

I'm personally not a fan of this change. Deref patterns is a hugely experimental feature currently.

But, no strong opinion.