Release Name: 0.17.0

Notes:
A suite for basic and advanced statistics on Ruby. Tested on Ruby 1.8.7, 1.9.1, 1.9.2 (April, 2010) and JRuby 1.4 (Ruby 1.8.7 compatible).

Include:
* Descriptive statistics: frequencies, median, mean, standard error, skew, kurtosis (and many others).
* Imports and exports datasets from and to Excel, CSV and plain text files.
* Correlations: Pearson's r, Spearman's rank correlation (rho), point biserial, tau a, tau b and  gamma.  Tetrachoric and Polychoric correlation provides by +statsample-bivariate-extension+ gem.
* Intra-class correlation
* Anova: generic and vector-based One-way ANOVA and Two-way ANOVA
* Tests: F, T, Levene, U-Mannwhitney.
* Regression: Simple, Multiple (OLS), Probit  and Logit
* Factorial Analysis: Extraction (PCA and Principal Axis), Rotation (Varimax, Equimax, Quartimax) and Parallel Analysis and Velicer's MAP test, for estimation of number of factors.
* Reliability analysis for simple scale and a DSL to easily analyze multiple scales using factor analysis and correlations, if you want it.
* Dominance Analysis, with multivariate dependent and bootstrap (Azen & Budescu)
* Sample calculation related formulas
* Structural Equation Modeling (SEM), using R libraries +sem+ and +OpenMx+
* Creates reports on text, html and rtf, using ReportBuilder gem
* Graphics: Histogram, Boxplot and Scatterplot


Changes:
=== 0.17.0 / 2010-12-09
* Added Statsample::Graph::Histogram and Statsample::Graph::Boxplot
* Added Statsample::Reliability::SkillScaleAnalysis for analysis of skill based scales.
* Delete combination and permutation clases. Backport for ruby 1.8.7 widely available
* Deleted unused variables (thanks, ruby-head)