Merge pull request !2810 from zhangzheng/softsign

Merge pull request !2832 from Peilin/invalid-type-bucket-check

Code checking

Merge pull request !2822 from hewei/fix_bool_tensor

Problem: Create 'uint8' type tensor from float data raise RuntimeError;
Fix:  Use same internal data type for 'uint8' and 'bool' tensor and allows
convert float data to bool tensor.

Merge pull request !2718 from chenzhongming/master

Merge pull request !2787 from zhaozhenlong/op/scatter-div-mul-vm

Merge pull request !2638 from jiangjinsheng/vm_mod

Merge pull request !2747 from zhangbuxue/refactor_the_StridedSlice_op

Merge pull request !2769 from ougongchang/fix_nonetype

Merge pull request !2720 from xychow/fix-assign-in-while

Merge pull request !2766 from yanghaitao/yht_serialize_num_parallel_worker

fix get loss error when it not a scalar and fix process specified data
failed when the action is False, and collect_specified_data parameter is
not None

Merge pull request !2699 from zhaozhenlong/op/scatter-max-vm

Merge pull request !1904 from riemann_penn/add_indexed_slices

Merge pull request !2743 from ougongchang/summary_collector_ut

Has fixed collecting optimizer error when mode is eval

Merge pull request !2737 from Peilin/zero-input-bucket-check

Merge pull request !2603 from TinaMengtingZhang/I1LTCA-mse-check-cleanup

Merge pull request !2624 from EricZ/fix_config_test

Merge pull request !2321 from Alexey_Shevlyakov/connector_throughput_dev

Merge pull request !2683 from liuxiao/ops-for-VM

Merge pull request !2717 from ms_yan/check_param

Merge pull request !2661 from zhaozhenlong/op/scatter-add

Merge pull request !2668 from wangnan39/support_weight_decay_for_sparse_optimizer

Merge pull request !2654 from guozhijian/fix_tfrecord_to_mr_para_check

Merge pull request !2629 from yanghaitao/yht_sampling_interval

Merge pull request !2580 from qianlong21st/fix_basic_tokenizer

Merge pull request !2640 from liyong126/minddataset_fix_errmsg