initial commit

exercises/07_threads/14_sync/Cargo.toml

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+[package]
+name = "sync"
+version = "0.1.0"
+edition = "2021"

exercises/07_threads/14_sync/src/lib.rs

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+// Not much to be exercised on `Sync`, just a thing to remember.
+fn outro() -> &'static str {
+    "I have a good understanding of __!"
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::outro;
+
+    #[test]
+    fn test_outro() {
+        assert_eq!(outro(), "I have a good understanding of Send and Sync!");
+    }
+}