OpenGrm NGram - Release 1.3 (compatible with OpenFst 1.5.3)
  * Templated Arc to provide new hist-arc counting, supporting fractional count
    based Katz backoff models.
  * Updated error handling.
  * Updated code to better conform to Google C++ guidelines.
  * Added Bayesian model merging.
  * Some re-factoring of functions to improve efficiency, particularly those
    for distributed model building, such as ngram-complete and ngram-split.
  * Updated unit tests to run more quickly and to be less bash-specific.

OpenGrm NGram - Release 1.2
  * Port to C++11 (1.2.0)
  * Port to C++11 addenda (1.2.1)
  * Compatibility with OpenFst version 1.5.1 (1.2.2)

OpenGrm NGram - Release 1.1
  * Substantially refactored code to allow for easy distributed model building.
  * Included a 'convenience' shell script bin/ngram.sh that runs some common
    pipelines of commands, e.g., from text file to pruned language model.
    Shell script provides illustration of distributed model building utilities.
  * Functions to re-estimate smoothed n-gram models to impose marginal
    distribution constraints.

OpenGrm NGram - Release 1.0
  * Initial public release
