Vendor dependencies for 0.3.0 release

vendor/num_enum/tests/renamed_num_enum.rs

@@ -0,0 +1,39 @@
+use std::process::Stdio;
+
+#[test]
+fn no_std() {
+    assert!(::std::process::Command::new("cargo")
+        .args([
+            "run",
+            "--manifest-path",
+            concat!(
+                env!("CARGO_MANIFEST_DIR"),
+                "/../renamed_num_enum/Cargo.toml",
+            ),
+        ])
+        .stdout(Stdio::inherit())
+        .stderr(Stdio::inherit())
+        .status()
+        .unwrap()
+        .success())
+}
+
+#[test]
+fn std() {
+    assert!(::std::process::Command::new("cargo")
+        .args([
+            "run",
+            "--manifest-path",
+            concat!(
+                env!("CARGO_MANIFEST_DIR"),
+                "/../renamed_num_enum/Cargo.toml",
+            ),
+            "--features",
+            "std",
+        ])
+        .stdout(Stdio::inherit())
+        .stderr(Stdio::inherit())
+        .status()
+        .unwrap()
+        .success())
+}