Switch to using rand::gen_range for sample_weight

Author: ngernest

src/urn_random.rs

@@ -2,13 +2,12 @@
 
 use crate::types::{Index, Tree, Tree::*, Urn, Weight};
 use crate::urn_deterministic::*;
-use rand::distributions::Uniform;
 use rand::prelude::*;
 
 /// Produces a value uniformly at random from the range `[0, w]`
 fn sample_weight(w: Weight) -> Weight {
     let mut rng = thread_rng();
-    rng.sample(Uniform::new_inclusive(0, w))
+    rng.gen_range(0..=w)
 }
 
 fn sampler<F, T>(f: F, urn: Urn<T>) -> T