add i128 support and fix some bugs (#875)

* fix secure random with big shape

* int128 initial commit

* fix some int128 issue

* seed optim for private input

* update tfe read and write

* fix tfe.function decorate function with argument not tfe tensor

* fix tfe tensor

* fix i128 reduce sum

* fix pond device issue

* fix i128 conv2d

* fix some test case

* formatting

* add i128 support for test case

* formatting

* fix macos compatibility

* fix tf compatibility

* fix tf compatibility

* version

---------

Co-authored-by: zjn364739 <zjn364739@alibaba-inc.com>

TFE based on TF2 (#869)

* tfe based on tf2

* add tf2onnx dep

* remove tf1 file

* fix a few bugs

* fix version

* build graph for aby3 test_error test case

* release 0.8.0-rc0

* version

* release

* add share device check and update readme

* update changelog and readme

* fix device str

* fix setup.py and training readme

* fix insecure seeded randomness

* version

* add link for tf1 like version 0.8.0

Co-authored-by: zhicong.hzc <zhicong.hzc@alibaba-inc.com>
Co-authored-by: Cheng (Vince) Hong <35251608+vincehong@users.noreply.github.com>
Co-authored-by: zjn <zjn364739@alibaba-inc.com>

Release 0.8.0 (#870)

* release 0.8.0-rc0

* version

* release

Co-authored-by: zhicong.hzc <zhicong.hzc@alibaba-inc.com>

version

Release 0.7.0 (#856)

* release candidate: 0.7.0

* add version discovery

* release 0.7.0

* Fix formatting issues

Co-authored-by: zhicong.hzc <zhicong.hzc@alibaba-inc.com>

release candidate: 0.7.0

Updates for 0.6.0-rc0 (#706)

* remove requirement that local computations return at least an operation
* drop Python version check in Makefile
* introduce tfe.Variable
* require tensorflow==2.0.0
* use Python 3.7 on CircleCi
* 0.6.0-rc0

Release 0.5.9

Release 0.5.8 (#646)

bump to 0.5.7