Disable std by default

Author: jakelang

Cargo.toml

@@ -7,5 +7,5 @@ repository = "https://github.com/ewasm/ewasm-rust-api"
 description = "ewasm API for Rust"
 
 [features]
-default = [ "std" ]
+default = []
 std = []

src/lib.rs

@@ -1,5 +1,8 @@
+#![cfg_attr(not(feature = "std"), no_std)]
+
 #[cfg(not(feature = "std"))]
 pub mod convert;
+
 /// ewasm_api is a library used to interface with Ethereum's EEI in Ewasm, a set of enhancements to
 /// the Ethereum smart contract platform.
 /// ewasm_api exposes both a set of unsafe "native" functions representing the actual EEI