Use contains combinator

As suggested by clippy, use the `contains` combinator instead of doing
manual range check on floats.

src/blockchain/mod.rs

@@ -169,7 +169,7 @@ pub fn progress() -> (Sender<ProgressData>, Receiver<ProgressData>) {
 
 impl Progress for Sender<ProgressData> {
     fn update(&self, progress: f32, message: Option<String>) -> Result<(), Error> {
-        if progress < 0.0 || progress > 100.0 {
+        if !(0.0..=100.0).contains(&progress) {
             return Err(Error::InvalidProgressValue(progress));
         }