add use_fp16

From: @sishuikang
Reviewed-by: @zhanghaibo5,@zhang_xue_tong
Signed-off-by: @zhanghaibo5

From: @sishuikang
Reviewed-by: 
Signed-off-by:

fix some bugs

From: @changzherui
Reviewed-by: @guoqi1024,@kingxian
Signed-off-by: @guoqi1024

From: @qujianwei
Reviewed-by: 
Signed-off-by:

fix for copyright

fix for create_dataset

fix for some bug

fix for parser_output

fix for parse output

add readme and fix for some bug

fix test2016 to test

delete space

fix some bug for create dataset

fix for comments and overflow

fix a wrong bug

fix for weight init

From: @ttudu
Reviewed-by: @c_34,@guoqi1024
Signed-off-by: @guoqi1024

From: @chen_ying113
Reviewed-by: 
Signed-off-by:

From: @lvmingfu
Reviewed-by: @gemini524
Signed-off-by:

From: @islam_amin
Reviewed-by: @robingrosman,@pandoublefeng
Signed-off-by: @pandoublefeng

From: @dessyang
Reviewed-by: 
Signed-off-by:

From: @sishuikang
Reviewed-by: @zhanghaibo5,@zhang_xue_tong
Signed-off-by: @zhanghaibo5

From: @fangzehua
Reviewed-by: 
Signed-off-by:

From: @islam_amin
Reviewed-by: @robingrosman,@mikef,@c_34
Signed-off-by: @c_34

update to petclassification

From: @c_34
Reviewed-by: @oacjiewen,@wuxuejian
Signed-off-by: @wuxuejian

From: @yuchaojie
Reviewed-by: 
Signed-off-by:

From: @tiancixiao
Reviewed-by: @liucunwei,@heleiwang
Signed-off-by: @liucunwei

From: @zhan_ke
Reviewed-by: @c_34,@oacjiewen
Signed-off-by: @c_34

From: @zhu_wenyong
Reviewed-by: @linqingke,@oacjiewen
Signed-off-by: @linqingke

From: @zhao_ting_v
Reviewed-by: @wuxuejian,@oacjiewen
Signed-off-by: @wuxuejian

From: @lijiaqi0612
Reviewed-by: 
Signed-off-by:

From: @c_34
Reviewed-by: @wuxuejian,@wuxuejian
Signed-off-by:

From: @zhouyaqiang0
Reviewed-by: @wuxuejian,@c_34
Signed-off-by: @c_34

From: @lvmingfu
Reviewed-by: @gemini524,@wuxuejian,@liangchenghui
Signed-off-by: @wuxuejian

From: @zhan_ke
Reviewed-by: @wuxuejian,@c_34
Signed-off-by: @c_34

From: @xiefangqi
Reviewed-by: 
Signed-off-by: