Add new optimizations to do the elf smoler

Cargo.toml

@@ -8,6 +8,8 @@ arduino-hal = {  git = "https://github.com/rahix/avr-hal", features = ["arduino-
 panic-halt = "0.2.0"
 sha1_smol = "1.0.0"
 binascii = { version = "0.1", default-features = false, features = ["decode"] }
+ds323x = "0.5.0"
+ufmt = "0.2.0"
 
 [profile.release]
 lto = true

build.sh

@@ -1 +1 @@
-cargo build -Z build-std=core --target avr-atmega328p.json --release
+cargo build -Z build-std-features=panic_immediate_abort -Z build-std=core --target avr-atmega328p.json --release