Vendor dependencies for 0.3.0 release

vendor/heapless/tests/cpass.rs

@@ -0,0 +1,25 @@
+//! Collections of `Send`-able things are `Send`
+
+use heapless::{
+    spsc::{Consumer, Producer, Queue},
+    HistoryBuffer, Vec,
+};
+
+#[test]
+fn send() {
+    struct IsSend;
+
+    unsafe impl Send for IsSend {}
+
+    fn is_send<T>()
+    where
+        T: Send,
+    {
+    }
+
+    is_send::<Consumer<IsSend, 4>>();
+    is_send::<Producer<IsSend, 4>>();
+    is_send::<Queue<IsSend, 4>>();
+    is_send::<Vec<IsSend, 4>>();
+    is_send::<HistoryBuffer<IsSend, 4>>();
+}