Minor build fix, updated num.

Author: brndnmtthws

Cargo.toml

@@ -6,4 +6,4 @@ edition = "2018"
 
 [dependencies]
 rand = "0.8"
-num = "0.3"
+num = "0.4"

src/bin/c08p02.rs

@@ -59,8 +59,8 @@ mod tests {
         let mut off_limits: Vec<Location> = vec![];
         let mut rng = rand::thread_rng();
         for _ in 0..100 {
-            let x = rng.gen_range(1, 100);
-            let y = rng.gen_range(1, 100);
+            let x = rng.gen_range(1..100);
+            let y = rng.gen_range(1..100);
             off_limits.push(Location { x, y });
         }
         let path = get_path_to(