September-october commit

- manual parser
- stl refinements
- all language constructs are now Send

examples/list-processing/main.orc

@@ -1,4 +1,4 @@
-import std::(proc::*, to_string)
+import std::to_string
 
 export const main := do{
   let foo = list::new[1, 2, 3, 4, 5, 6];
@@ -6,7 +6,7 @@ export const main := do{
   let sum = bar
     |> list::skip 2
     |> list::take 3
-    |> list::reduce (\a.\b. a + b)
+    |> list::reduce (\a. \b. a + b)
     |> option::unwrap;
   cps println $ to_string sum;
   0