<commit_before>## [Unreleased]

## [v0.8.0](https://github.com/OpenNMT/OpenNMT/releases/tag/v0.8.0) (2017-06-28)

### Breaking changes

* Models previously trained with `-pdbrnn` or `-dbrnn` are no more compatible
* `-start_decay_ppl_delta` option is renamed to `-start_decay_score_delta`
* `-decay perplexity_only` option is renamed to `-decay score_only`

### Deprecations

* `-brnn`, `-dbrnn` and `-pdbrnn` options are replaced by `-encoder_type <type>` for future extensions
* `-sample_target_vocab` option is renamed `-sample_vocab` and is extended to language models

### New features

* Implement inference for language models for scoring or sampling
* Support variational dropout and dropout on source sequence
* Support several validation metrics: loss, perplexity, BLEU and Damerau-Levenshtein edit ratio
* Add option in preprocessing to check that lengths of source and target are equal (e.g. for sequence tagging)
* Add `-pdbrnn_merge` option to define how to reduce the time dimension
* Add option to segment mixed cased words<commit_msg>Fix option name in the changelog<commit_after>## [Unreleased]

## [v0.8.0](https://github.com/OpenNMT/OpenNMT/releases/tag/v0.8.0) (2017-06-28)

### Breaking changes

* Models previously trained with `-pdbrnn` or `-dbrnn` are no more compatible
* `-start_decay_ppl_delta` option is renamed to `-start_decay_score_delta`
* `-decay perplexity_only` option is renamed to `-decay score_only`

### Deprecations

* `-brnn`, `-dbrnn` and `-pdbrnn` options are replaced by `-encoder_type <type>` for future extensions
* `-sample_tgt_vocab` option is renamed `-sample_vocab` and is extended to language models

### New features

* Implement inference for language models for scoring or sampling
* Support variational dropout and dropout on source sequence
* Support several validation metrics: loss, perplexity, BLEU and Damerau-Levenshtein edit ratio
* Add option in preprocessing to check that lengths of source and target are equal (e.g. for sequence tagging)
* Add `-pdbrnn_merge` option to define how to reduce the time dimension
* Add option to segment mixed cased words
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{'dir': 'git-commits-cleaned', 'id': '2582115', 'n_tokens_mistral': 683, 'n_tokens_neox': 648, 'n_words': 248}