History.txt

=== 1.2.0

* Updated statsample dependency to 1.5.0
* Added new dependency on daru (0.1.0)
* Modernized gem. Added gemspec, Gemfile and specified dependencies.

=== 0.16.1 / 2010-12-22

* Added support for optimized tetrachoric correlation calculation. Update statsample-optimization before report any error, please.

=== 0.16.0 / 2010-11-14
* Bug fix: Specs work without gsl. Counts iterations when using only ruby
* Updated specs to rspec 2
* Updated Manifest.txt
* Added grab_references to retrieve references on package

=== 0.13.4 / 2010-08-18

* Added cache for tetrachoric correlation matrix
* Extra documentation. Renamed internal two step estimation methods on Polychoric

=== 0.13.3 / 2010-06-22

* Bug fix on Processor.fd_loglike_cell_rho. 
* Chi square added on spec. 
* Olsson (1979) added on references
* Derivative version of joint estimate operational

=== 0.13.1 / 2010-06-21
* Better specs. Bug fix on Manifest.txt

=== 0.13.0 / 2010-06-21

* First independent version of statsample-bivariate-extension