Make prelude be separate file

schala-lang/language/src/lib.rs

@@ -67,11 +67,7 @@ impl Schala {
   }
 
   pub fn new() -> Schala {
-    let prelude = r#"
-type Option<T> = Some(T) | None
-type Color = Red | Green | Blue
-type Ord = LT | EQ | GT
-    "#;
+    let prelude = include_str!("prelude.schala");
     let mut s = Schala::new_blank_env();
     s.execute_pipeline(prelude, &EvalOptions::default());
     s

schala-lang/language/src/prelude.schala

@@ -0,0 +1,4 @@
+
+type Option<T> = Some(T) | None
+type Color = Red | Green | Blue
+type Ord = LT | EQ | GT