Make crate no_std (#78)

Cargo.toml

@@ -1,16 +1,19 @@
 [package]
 authors = ["Markus Stange <mstange@themasta.com>", "Jeff Muizelaar <jrmuizel@gmail.com>"]
 name = "msvc-demangler"
-version = "0.10.1"
+version = "0.11.0"
 keywords = ["demangle", "undecorate", "c-plus-plus", "msvc"]
 license = "MIT/NCSA"
 documentation = "https://docs.rs/msvc-demangler/"
 description = "A rust library that demangles / undecorates C++ symbols mangled by MSVC"
 repository = "https://github.com/mstange/msvc-demangler-rust"
 readme = "README.md"
+edition = "2021"
+categories = ["no-std"]
 
 [dependencies]
-bitflags = "2"
+bitflags = { version = "2", default-features = false }
+itoa = "1.0"
 
 [[bin]]
 name = "undname"

src/bin/undname.rs

@@ -29,13 +29,7 @@ fn main() {
         }
         let flags = msvc_demangler::DemangleFlags::llvm();
         let demangled = msvc_demangler::serialize(&parsed, flags);
-        match demangled {
-            Ok(ref string) => println!("{}", string),
-            Err(err) => {
-                eprintln!("error: {}", err);
-                println!("{}", sym);
-            }
-        }
+        println!("{}", demangled);
     };
 
     if args.is_empty() {