Add random tools

grammar.js

@@ -187,7 +187,9 @@ module.exports = grammar({
       'assert_equal',
       'output',
       'read',
-      'write',
+      'random',
+      'random_integer',
+      'help',
     ),
 
     select: $ => prec.right(seq(

src/grammar.json

@@ -768,7 +768,15 @@
         },
         {
           "type": "STRING",
-          "value": "write"
+          "value": "random"
+        },
+        {
+          "type": "STRING",
+          "value": "random_integer"
+        },
+        {
+          "type": "STRING",
+          "value": "help"
         }
       ]
     },

src/node-types.json

@@ -581,6 +581,10 @@
     "type": "function",
     "named": false
   },
+  {
+    "type": "help",
+    "named": false
+  },
   {
     "type": "identifier",
     "named": true
@@ -609,6 +613,14 @@
     "type": "output",
     "named": false
   },
+  {
+    "type": "random",
+    "named": false
+  },
+  {
+    "type": "random_integer",
+    "named": false
+  },
   {
     "type": "read",
     "named": false
@@ -637,10 +649,6 @@
     "type": "while",
     "named": false
   },
-  {
-    "type": "write",
-    "named": false
-  },
   {
     "type": "{",
     "named": false