there seems a huge inefficiency in RailsDataExplorer#build_exploration_from_data_series_specs
where we iterate over the entire data collection for every exploration.


### 0.2.3

* Don't show all explorations by default. Takes too long when having 100
  explorations to render. Instead show univariate explorations by default
  and bivariate explorations on demand.

### 0.2.2

* Fixed file inclusion bug that prevented loading of Gem

### 0.2.1

* Fixed a bug
* Updated documentation

## 0.2.0

* Improvements to charts.
* Sort labels for categorical data.
* Improved table of contents at top of page.
* Improved presentation of contingency table.
* Avoid division by zero when given a data series with all '0' values.
* Improved performance of table rendering.
* Added `#number_of_values` for integration with Filterrific gem.

## 0.1.0

* Is now being used in a production app, however no documentation yet.

### 0.0.1

* Initial release