2.2.0

• Added CurrencyConverter\CurrencyConverterInterface
• Updated some docs
• Docblock fixes

2.1.1

Addition of Zend Cache Adapter

2.1.0

Used DateInterval class instead of seconds for cache time out

See README.md

2.0.0

Features

1. Addition of cache adapters
2. Addition of rate providers

Stable after refactoring

1.1.1

Created ExceptionInterface

Refactored the library

1.1.0-beta1

Updated documentation

First stable release

1.0.0

Updated Documentation for Yahoo