Add assert.deepStrictEqual and assert.notDeepStrictEqual to node.d.ts

[io.js 1.2.0][1] added [deepStrictEqual][2] and [notDeepStrictEqual][3] to assert.

   [1]: https://github.com/nodejs/node/blob/v1.2.0/CHANGELOG.md#notable-changes
   [2]: https://nodejs.org/api/assert.html#assert_assert_deepstrictequal_actual_expected_message
   [3]: https://nodejs.org/api/assert.html#assert_assert_notdeepstrictequal_actual_expected_message

node/node-tests.ts

@@ -23,6 +23,8 @@ assert.equal(3, "3", "uses == comparator");
 
 assert.notStrictEqual(2, "2", "uses === comparator");
 
+assert.notDeepStrictEqual({ x: { y: "3" } }, { x: { y: 3 } }, "uses === comparator");
+
 assert.throws(() => { throw "a hammer at your face"; }, undefined, "DODGED IT");
 
 assert.doesNotThrow(() => {