Initial commit. WIP blur implementation. Grid struct is tentatively ready. Model struct is in its nascency.

src/main.rs

@@ -0,0 +1,8 @@
+mod blur;
+mod grid;
+mod model;
+
+fn main() {
+    let boxes = blur::boxes_for_gaussian::<3>(2.5);
+    println!("boxes: {:?}", boxes);
+}