add test case

Merge pull request !3102 from nhussain/random_crop_fixes

address review cmts

addr review cmts

Merge pull request !2941 from xiefangqi/md_add_offsets_feature

add test caser

fix ci

address review cmts

ci

addr review cmt

fix typo

address review cmts

add 2 more test cases

cpplint fix

addr cpplint

addr ci

fix tst case err

fix doc str

fixed random_apply tests

fix validators

fixed random_apply tests

fix engine validation

Merge pull request !2375 from h.farahat/python_tokenizer

!38 Synchronize with latest Ascend software suite 17 Jun 2020
Merge pull request !38 from yanghaoran/master

remove graphengine changes

concat op

Truncate Pair

concat_op

remove graph engine changes

ToNumberOp implementation almost done

ToNumberOp complete

ci fix

ci fix

ci fix

ci fix

ci fix

ci fix

ci fix

ci fix

ci fix

ci fix

merge conflicts

phase II vocab rework

added more test cases

fix api doc string

address review cmts and fix CI

address ci complains

fix review cmts

ci

addr review cmts

revert

ci

private class

ci

fix ci

address ci

address review cmts

fix style err

fix complie error

more tests

address CI complains

fix ci

adress review comments

address review cmts