[oden] Catch and render script errors, stop crashing

This is kinda nice actually

oden-js/src/lib.rs

@@ -41,7 +41,7 @@ pub enum Error {
     ConversionError(String),
     #[error("an error occurred calling a rust function: {0}")]
     RustFunctionError(String),
-    #[error("an exception was thrown during evaluation: {1}\nStack: {2}")]
+    #[error("an exception was thrown during evaluation: {1}\nStack:\n{2}")]
     Exception(Value, String, String),
     #[error("out of memory")]
     OutOfMemory,