From 69fe0e2722c293add643e1a21df0e5f7527a0ecd Mon Sep 17 00:00:00 2001
From: Jerry Wu <wzhongyuan@gmail.com>
Date: Fri, 18 Aug 2017 17:06:11 +0800
Subject: [PATCH] support layerwise serialization (#1472)

* support layerwise serialization

* support layerwise serialization

* add unit tests

* remove commented code

* fix style issue

* change invoke api

* add new api

* resolve conflict

* fix typo

* refinement per review

* refinement per review

* refinement