The dims for crf and crf_decoding layers are wrong, i.e. height and width are swapped.

The instance weight and coeff are only mulipled to the gradient with respect to input.

Using ApproximatelyEquals for trainer config unittest.

fix style problem in doc_cn/introduction/index.rst

Release/v0.9.0

* Make float equal works well.
  * compare 0.01 and 0.009999999999 will return true.

Refine documentation in RELEASE.md

English Document Structure

Add `set -e` for paddle boot up script.

deepSwap

* error when paddle has a wrong version number.

doc edit for make and install

Add syntax='proto2' when using protobuf 3

revise the data path of srl demo

Update the data of quick start.

refine doc_cn/ui/index.rst

Refine swig_py_paddle.rst

Bumping up version number

[Refine doc] refine ubuntu installation and FAQ docs.

Refine ui cmd doc