cargo: include ryu

Cargo.lock

@@ -257,6 +257,7 @@ dependencies = [
  "nom",
  "panic-halt",
  "panic-itm",
+ "ryu",
  "smoltcp",
  "stm32h7xx-hal",
 ]
@@ -434,6 +435,12 @@ dependencies = [
  "semver",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
+
 [[package]]
 name = "semver"
 version = "0.9.0"

Cargo.toml

@@ -17,6 +17,7 @@ embedded-nal = "0.1.0"
 minimq = { git = "https://github.com/quartiq/minimq.git", branch = "master" }
 heapless = "0.5.6"
 nom = { version = "5.1.2", default-features = false, features = [] }
+ryu = "1.0"
 
 # Logging and Panicking
 panic-itm = "0.4.1"