Use spread operator instead of apply() where applicable

> lebab --replace . --transform arg-spread

Author: flimzy

compiler/prelude/goroutines.js

@@ -131,7 +131,7 @@ var $go = function (fun, args) {
     var $goroutine = function () {
         try {
             $curGoroutine = $goroutine;
-            var r = fun.apply(undefined, args);
+            var r = fun(...args);
             if (r && r.$blk !== undefined) {
                 fun = function () { return r.$blk(); };
                 args = [];

compiler/prelude/types.js

@@ -288,7 +288,7 @@ var $newType = function (size, kind, string, named, pkg, exported, constructor)
                             if (v.$val === undefined) {
                                 v = new f.typ(v);
                             }
-                            return v[m.prop].apply(v, args);
+                            return v[m.prop](...args);
                         };
                     };
                     fields.forEach(function (f) {