Merge pull request !847 from ZhangQinghua/opt

Merge pull request !869 from JesseKLee/random_data_op

Merge pull request !794 from zhaozhenlong/fix-issues-image-gradients-complement-check

Merge pull request !856 from jiangzhiwen/dataset/skip_thread

fix DiagPart constant folding issue

fix argmin output type check

fix atan2 doc error

fix remove FusedBatchNorm and its grad

Merge pull request !657 from huanghui/fix-confusionmulgrad-fusion-pass

Merge pull request !695 from YuJianfeng/master

Merge pull request !430 from Etone.Chan/bufferfusion

This reverts commit ea6958c50a.

Merge pull request !264 from xychow/remove-unnecessary-cache-and-add-cache

Merge pull request !621 from liyong126/mindrecord_ut

Merge pull request !554 from huanghui/fix_derelu_fusion_pass

Merge pull request !492 from YuJianfeng/allgather

Merge pull request !556 from Chong/partition

add cache for PythonPrimEvaluator. Be careful that
 the infer function of PythonPrimitive in python code should
 be idempotent.

Merge pull request !41 from changzherui/syn-code

This reverts commit d447364417.

Merge pull request !390 from gukecai/master

Merge pull request !406 from Peilin/first-row-crc-check

addressed code review comments. added check in python layer to exclude directories and to raise an error if a pattern does not match any file

fixed clang format

fixed cppcheck

fixed cppcheck (used std::accumulate and std::copy_if). regenerated tfrecord file to contain correct header, it was a dummy header before

fixed cppcheck: added const reference for string parameter for lambdas, fixed clang format: whitespace adjustments

more clang whitespace fixes...

changed print to logger.info

Merge pull request !425 from yanghaitao/yht_textfiledatasetv2

Merge pull request !472 from YuJianfeng/master

Merge pull request !478 from fary86/fix_log_and_ir_issues