Switch from Rc<RefCell> to Arc<Mutex<T>> or Arc<ReentrantMutex<RefCell<T>>>.

helwasm/src/hel_state.rs

@@ -0,0 +1,6 @@
+use hel::lk::LK;
+use std::sync::{Arc, Mutex};
+
+lazy_static! {
+    static ref STATE: Arc<Mutex<LK>> = Arc::new(Mutex::new(LK::new()));
+}