Bump 2.0.0rc2 (#1926)

Author: francoishernandez

CHANGELOG.md

@@ -4,6 +4,49 @@
 
 ## [Unreleased]
 
+## [2.0.0rc2](https://github.com/OpenNMT/OpenNMT-py/tree/2.0.0rc2) (2020-11-10)
+
+### Fixes and improvements
+* Parallelize onmt_build_vocab (422d824)
+* Some fixes to the on-the-fly transforms
+* Some CTranslate2 related updates
+* Some fixes to the docs
+
+## [2.0.0rc1](https://github.com/OpenNMT/OpenNMT-py/tree/2.0.0rc1) (2020-09-25)
+
+This is the first release candidate for OpenNMT-py major upgdate to 2.0.0!
+
+The major idea behind this release is the -- almost -- complete **makeover of the data loading pipeline** . A new 'dynamic' paradigm is introduced, allowing to apply on the fly transforms to the data.
+
+This has a few advantages, amongst which:
+
+* remove or drastically reduce the preprocessing required to train a model;
+* increase and simplify the possibilities of data augmentation and manipulation through on-the fly transforms.
+
+These transforms can be specific **tokenization** methods, **filters**, **noising**, or **any custom transform** users may want to implement. Custom transform implementation is quite straightforward thanks to the existing base class and example implementations.
+
+You can check out how to use this new data loading pipeline in the updated [docs and examples](https://opennmt.net/OpenNMT-py).
+
+All the **readily available transforms** are described [here](https://opennmt.net/OpenNMT-py/FAQ.html#what-are-the-readily-available-on-the-fly-data-transforms).
+
+### Performance
+
+Given sufficient CPU resources according to GPU computing power, most of the transforms should not slow the training down. (Note: for now, one producer process per GPU is spawned -- meaning you would ideally need 2N CPU threads for N GPUs).
+
+### Breaking changes
+
+A few features are dropped, at least for now:
+
+* audio, image and video inputs;
+* source word features.
+
+Some very old checkpoints with previous fields and vocab structure are also incompatible with this new version.
+
+For any user that still need some of these features, the previous codebase will be retained as [`legacy` in a separate branch](https://github.com/OpenNMT/OpenNMT-py/tree/legacy). It will no longer receive extensive development from the core team but PRs may still be accepted.
+
+
+-----
+
 ## [1.2.0](https://github.com/OpenNMT/OpenNMT-py/tree/1.2.0) (2020-08-17)
 ### Fixes and improvements
 * Support pytorch 1.6 (e813f4d, eaaae6a)

onmt/__init__.py

@@ -17,4 +17,4 @@
 __all__ = [onmt.inputters, onmt.encoders, onmt.decoders, onmt.models,
            onmt.utils, onmt.modules, "Trainer"]
 
-__version__ = "2.0.0rc1"
+__version__ = "2.0.0rc2"

setup.py

@@ -11,7 +11,7 @@
     description='A python implementation of OpenNMT',
     long_description=long_description,
     long_description_content_type='text/markdown',
-    version='2.0.0rc1',
+    version='2.0.0rc2',
     packages=find_packages(),
     project_urls={
         "Documentation": "http://opennmt.net/OpenNMT-py/",