* hide operator API

* update

* update api.spec

* fix merge

* fix test

fix doc cmake in release/1.0.0

test=release/1.0.0

disable nccl2 test on CPU only mode

only mode

* mac ci make install fix

* fix build

* update

* update

[Urgent] Add out params to some apis

clean a few more kwargs

Hide parameter

Move trainer to contrib

fix table grad send sync_mode

* generic cmake

* Update generic.cmake

* add nccl2 dist api

* update apispec

* update

* update api spec

* add guide

* "fix doc"

* Update windows_inference.md

Looks like there is a little problem in markdown format writing of head lines

Remove kwargs in softshrink

fix links in readme

fix roi_perspective_transform_op.cc unused variable caused error on Mac

fix img_conv_group doc

Remove kwargs in elementwise layers and scale layer

disable memopt test

 remove kwargs of some activation api

* add ShareLoDs

* refine

* add Is EmptyVarName

* refine Sharedlod