v0.46.0

New Features

• NumberTheory isPerfectNumber
• Sequence perfectNumber

Improvements

• Improve README documentation for continuous distributions
• Updates to build tools
• General improvements

v0.45.0

Improvements

• Add Beta distribution inverse quantile function
• Improvements to Weibull distribution
• Improvements to Cauchy distribution
• Improvements to Laplace distribution
• Improvements to Logistic distribution
• Improvements to LogNormal distribution
• Improvements to Normal distribution
• Improvements to Pareto distribution
• Improvements to Algebra cubic/quartic complex root handling

v0.44.0

Improvements

• [Issue 271] Improvements to documentation
• [Issue 269] Add closed-form inverse function for Exponential distribution

V0.43.0

New Features

• Arithmetic copySign
• Matrix negate
• Matrix isSkewSymmetric

v0.42.0

New Features

• Weighted mean
• Weighted sample variance
• Weighted covariance
• Weighted correlation coefficient

Improvements

• Minor code improvements

V0.41.0

New Features

• Arithmetic almostEqual

Improvements

• Statistics\Average::mode improved to work with non-integer values
• Various minor code improvements

v0.40.0

New Features

• Simpler interface for Significance tTest for one and two samples

Improvements

• T test for two samples uses more robust Welch test
• Improvements to Normal and Standard Normal continuous distributions
• General improvements to continuous distributions

v0.39.0

Improvements

• Upgrade unit testing framework to PHPUnit 6
• Update unit tests for PHPUnit 6 compatibility
• Add PHP 7.2 to continuous integration tests

v0.38.0

Improvements

• Percentile reimplemented to use linear interpolation between closest ranks method - Second variant, C = 1
• General code improvements
• Better error and exception handling

v0.37.0

Improvements

• Change probability distributions to be objects instead of static methods

Backwards Incompatible Changes

• Change probability distributions to be objects instead of static methods