1.0.0 - Jan 2, 2017

0.3.0 - Dec 9, 2016

    Remove CounterInterface from this spec
    Add CacheException & InvalidArgumentException interfaces
    Return success status (bool) on delete, clear & deleteMultiple
    Introduce a default value for getMultiple
    Various documentation clarifications

0.2.0 - Nov 16, 2016

    Added a $default param to get() to return something else than null when the key is missing
    Removed TTL_DAY, TTL_HOUR and TTL_MINUTE constants
    Renamed exists() to has() for consistency with PSR-6

0.1.0 - Nov 16, 2016

    Initial release
