Break io into chirp-minifb, and refactor to use Results in more places

justfile

@@ -1,10 +1,17 @@
 # Some common commands for working on this stuff
 
-test:
+# Run All Tests
+rat:
     cargo test --doc && cargo nextest run
 
+test:
+    cargo nextest run
+
 chirp:
     cargo run --bin chirp-minifb -- tests/chip8-test-suite/bin/chip8-test-suite.ch8
+# Run at 2100000 instructions per frame, and output per-frame runtime statistics
+bench:
+    cargo run --bin chirp-minifb --release -- chip-8/1dcell.ch8 -xP -s10 -S2100000
 
 cover:
     cargo llvm-cov --open --doctests