diff --git a/src/agent.rs b/src/agent.rs
index 53cf30d..fcbdad3 100644
--- a/src/agent.rs
+++ b/src/agent.rs
@@ -1,5 +1,4 @@
 use crate::{buffer::Buf, util::wrap};
-
 use fastapprox::faster::{cos, sin};
 use rand::{seq::SliceRandom, Rng};
 use std::f32::consts::TAU;
@@ -41,7 +40,6 @@ impl Agent {
     }
 
     // Tick an agent
-    #[inline]
     pub fn tick(
         &mut self,
         buf: &Buf,
@@ -75,7 +73,9 @@ impl Agent {
         if (center > left) && (center > right) {
             direction = 0.0;
         } else if (center < left) && (center < right) {
-            direction = *[-1.0, 1.0].choose(&mut rng).unwrap();
+            direction = *[-1.0, 1.0]
+                .choose(&mut rng)
+                .expect("unable to choose random direction");
         } else if left < right {
             direction = 1.0;
         } else if right < left {
diff --git a/src/blur.rs b/src/blur.rs
index 1ecdc39..0735c7d 100644
--- a/src/blur.rs
+++ b/src/blur.rs
@@ -1,19 +1,11 @@
 use itertools::multizip;
 use rayon::prelude::*;
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Blur {
     row_buffer: Vec<f32>,
 }
 
-impl Clone for Blur {
-    fn clone(&self) -> Blur {
-        Blur {
-            row_buffer: self.row_buffer.clone(),
-        }
-    }
-}
-
 impl Blur {
     pub fn new(width: usize) -> Self {
         Blur {
diff --git a/src/grid.rs b/src/grid.rs
index d5c2a6c..24bc0ff 100644
--- a/src/grid.rs
+++ b/src/grid.rs
@@ -23,33 +23,15 @@ impl Display for PopulationConfig {
 }
 
 impl PopulationConfig {
-    const SENSOR_ANGLE_MIN: f32 = 0.0;
-    const SENSOR_ANGLE_MAX: f32 = 120.0;
-    const SENSOR_DISTANCE_MIN: f32 = 0.0;
-    const SENSOR_DISTANCE_MAX: f32 = 64.0;
-    const ROTATION_ANGLE_MIN: f32 = 0.0;
-    const ROTATION_ANGLE_MAX: f32 = 120.0;
-    const STEP_DISTANCE_MIN: f32 = 0.2;
-    const STEP_DISTANCE_MAX: f32 = 2.0;
-    const DEPOSITION_AMOUNT_MIN: f32 = 5.0;
-    const DEPOSITION_AMOUNT_MAX: f32 = 5.0;
-    const DECAY_FACTOR_MIN: f32 = 0.1;
-    const DECAY_FACTOR_MAX: f32 = 0.1;
-
     // Construct a random configuration.
     pub fn new<R: Rng + ?Sized>(rng: &mut R) -> Self {
         PopulationConfig {
-            sensor_distance: rng.gen_range(Self::SENSOR_DISTANCE_MIN..=Self::SENSOR_DISTANCE_MAX),
-            step_distance: rng.gen_range(Self::STEP_DISTANCE_MIN..=Self::STEP_DISTANCE_MAX),
-            decay_factor: rng.gen_range(Self::DECAY_FACTOR_MIN..=Self::DECAY_FACTOR_MAX),
-            sensor_angle: rng
-                .gen_range(Self::SENSOR_ANGLE_MIN..=Self::SENSOR_ANGLE_MAX)
-                .to_radians(),
-            rotation_angle: rng
-                .gen_range(Self::ROTATION_ANGLE_MIN..=Self::ROTATION_ANGLE_MAX)
-                .to_radians(),
-            deposition_amount: rng
-                .gen_range(Self::DEPOSITION_AMOUNT_MIN..=Self::DEPOSITION_AMOUNT_MAX),
+            sensor_distance: rng.gen_range(0.0..=64.0),
+            step_distance: rng.gen_range(0.2..=2.0),
+            decay_factor: rng.gen_range(0.1..=0.1),
+            sensor_angle: rng.gen_range(0.0_f32..=120.0).to_radians(),
+            rotation_angle: rng.gen_range(0.0_f32..=120.0).to_radians(),
+            deposition_amount: rng.gen_range(5.0..=5.0),
         }
     }
 }
@@ -103,13 +85,6 @@ impl Grid {
         j * self.width + i
     }
 
-    /*
-    // Get the buffer value at a given position. The implementation effectively treats data as periodic, hence any finite position will produce a value.
-    pub fn get_buf(&self, x: f32, y: f32) -> f32 {
-        self.buf.buf[self.index(x, y)]
-    }
-    */
-
     // Add a value to the grid data at a given position.
     pub fn deposit(&mut self, x: f32, y: f32) {
         let idx = self.index(x, y);
@@ -128,7 +103,6 @@ impl Grid {
         );
     }
 
-    #[inline]
     pub fn tick(&mut self) {
         let (width, height) = (self.width, self.height);
         let PopulationConfig {
@@ -153,33 +127,12 @@ impl Grid {
         self.deposit_all();
     }
 
-    #[inline]
     pub fn deposit_all(&mut self) {
         let agent_list = self.agents.clone();
         for agent in agent_list.iter() {
             self.deposit(agent.x, agent.y);
         }
     }
-
-    // No longer needed (moved to imgdata.rs)
-    /*
-    pub fn quantile(&self, fraction: f32) -> f32 {
-        let index = if (fraction - 1.0_f32).abs() < f32::EPSILON {
-            self.data.len() - 1
-        } else {
-            (self.data.len() as f32 * fraction) as usize
-        };
-        let mut sorted = self.data.clone();
-        sorted
-            .as_mut_slice()
-            .select_nth_unstable_by(index, |a, b| a.partial_cmp(b).unwrap());
-        sorted[index]
-    }
-
-    pub fn data(&self) -> &[f32] {
-        &self.data
-    }
-    */
 }
 
 pub fn combine<T>(grids: &mut [Grid], attraction_table: &[T])