## v0.0.4

* Added percentile.
* Added interquartile range.

## v0.0.3

* Better mode algorithm.
* Fixed geometric mean test to test for realness instead of NaN because Ruby 1.9+ returns complex number instead of NaN when there's negative numbers in the set.
* Made array.rb load all files automatically instead of listing them manually.
* Added sum.
* Added product.
* Added range.
* Added coefficient of variation.

## v0.0.2

* Added standard deviation.

## v0.0.1

* Initial release.