Release v0.2.3

* Update version to v0.2.3
* Update CHANGELOG
* Update `examples/text_style_transfer` README

Author: ZhitingHu

CHANGELOG.md

@@ -1,13 +1,18 @@
 
-## [Unreleased]
+## [v0.2.3](https://github.com/asyml/texar/releases/tag/v0.2.3) (2019-09-22)
 
 ### New features
 
+* Texar Tensorflow now imported by `import texar.tf as tx`. ([#197](https://github.com/asyml/texar/pull/197))
+* Add pretrained modules \[[docs](https://texar.readthedocs.io/en/latest/code/modules.html#pre-trained)\], e.g., BERT, XLNet, etc. ([#206](https://github.com/asyml/texar/pull/206))
+* Add new tensor shape related utils, e.g., [reduce_with_weights](https://texar.readthedocs.io/en/latest/code/utils.html#reduce-with-weights), [varlength\_\*](https://texar.readthedocs.io/en/latest/code/utils.html#varlength-concat). ([#201](https://github.com/asyml/texar/pull/201)) 
+
 ### Feature improvements
 
 ### Fixes
 
 * Fix docstring of connector `_mlp_transform`. ([#192](https://github.com/asyml/texar/pull/192))
+* Fix `dynamic_decode` out-of-range error when max-decoding-length is reached. ([#208](https://github.com/asyml/texar/pull/208))
 
 ## [v0.2.2](https://github.com/asyml/texar/releases/tag/v0.2.2) (2019-08-05)
 

examples/text_style_transfer/README.md

@@ -31,6 +31,8 @@ python main.py --config config
 * The model will first be pre-trained for a few epochs (specified in `config.py`). During pre-training, the `Encoder-Decoder` part is trained as an autoencoder, while the `Classifier` part is trained with the classification labels.
 * Full-training is then performed for another few epochs. During full-training, the `Classifier` part is fixed, and the `Encoder-Decoder` part is trained to fit the classifier, along with continuing to minimize the autoencoding loss.
 
+(**Note:** When using your own dataset, make sure to set `max_decoding_length_train` and `max_decoding_length_infer` in [config.py](https://github.com/asyml/texar/blob/master/examples/text_style_transfer/config.py#L85-L86).) 
+
 Training log is printed as below:
 ```
 gamma: 1.0, lambda_g: 0.0

texar/tf/version.py

@@ -14,7 +14,7 @@
 
 _MAJOR = "0"
 _MINOR = "2"
-_REVISION = "3-unreleased"
+_REVISION = "3"
 
 VERSION_SHORT = "{0}.{1}".format(_MAJOR, _MINOR)
 VERSION = "{0}.{1}.{2}".format(_MAJOR, _MINOR, _REVISION)