“250e893745bf4fc65bafaab94c2009bba4d6ea09”上不存在“paddle/fluid/train/git@gitcode.net:paddlepaddle/Paddle.git”
* Add DataFeeder A v2 API like data feeder for book demos. We can feed data directly from reader. * Fix CI * Add an unittest for while/rnn op forward * Add unittest for raw while op backward * Fix CI