Thread improvements, a lot of reworking

app/src/main.rs

@@ -25,7 +25,7 @@ fn main() {
 
     let start_time = Instant::now();
 
-    let mut scaler = LabScaler::new(ResamplingFunction::Lanczos3);
+    let mut scaler = Scaler::new(ResamplingFunction::Lanczos3);
     scaler.set_threading_policy(ThreadingPolicy::Adaptive);
     let store =
         ImageStore::<u8, 4>::from_slice(&mut bytes, dimensions.0 as usize, dimensions.1 as usize);

src/acceleration_feature.rs

@@ -1,8 +1,12 @@
 #[derive(Debug, Copy, Clone, Ord, PartialOrd, Eq, PartialEq)]
+#[allow(dead_code)]
 pub(crate) enum AccelerationFeature {
     #[cfg(all(target_arch = "aarch64", target_feature = "neon"))]
+    #[allow(dead_code)]
     Neon,
     #[cfg(any(target_arch = "x86_64", target_arch = "x86"))]
+    #[allow(dead_code)]
     Sse,
+    #[allow(dead_code)]
     Native
 }