Added more built-ins to the unrequire blacklist.

Also removed term following @payonel's suggestion.

Author: skyem123

unrequire.lua

@@ -14,10 +14,14 @@ local blacklist = {
 	["component"] = true,
 	["_G"] = true,
 	["term"] = true,
-	["keyboard"] = true,
 	["table"] = true,
 	["string"] = true,
 	["math"] = true,
+	["debug"] = true,
+	["os"] = true,
+	["coroutine"] = true, 
+	["utf8"] = true,
+	["bit32"] = true,
 }
 local function errprint(msg)
 	io.stderr:write(msg .. "\n")