enable LTO

Cargo.toml

@@ -5,5 +5,8 @@ members = [
   "libticker",
 ]
 
+[profile.release]
+lto = true
+
 [patch.crates-io]
 typed-html = { git = "https://github.com/bodil/typed-html", rev = "4c13ecca506887d07638cdf12d6ea6d51cd3b29a" }