## 2.2.0
 * Add support for ActiveRecord >= 5

## 2.1.0
 * Add support for ActiveRecord >= 4.2

## 2.0.0
 * Add support for ActiveRecord 4.0
 * Drop support for Ruby < 1.9.3

## 1.1.0
 * internal refactoring

## 1.0.1
 * adding license

## 1.0.0
 * initial release