Issue 233 added missing wat keywords (#387)

Author: Mark Sibly

src/languages/wat.ts

@@ -383,6 +383,11 @@ const MonarchDefinitions = {
     "get_global",
     "set_global",
 
+    "drop",
+    "select",
+    "memory.size",
+    "memory.grow",
+
     "current_memory",
     "grow_memory"
   ],

tests/languages/wat.spec.ts

@@ -385,6 +385,10 @@ describe("Tests for Wat", () => {
         "tee_local",
         "get_global",
         "set_global",
+        "drop",
+        "select",
+        "memory.size",
+        "memory.grow",
         "current_memory",
         "grow_memory"
       ]);