# 2.3.0 (February 2021)
## API changes:
* #38: Added func (cache *Cache) SetExpirationReasonCallback(callback ExpireReasonCallback) This wil function will replace SetExpirationCallback(..) in the next major version.
# 2.2.0 (January 2021)
## API changes:
* #37 : a GetMetrics call is now available for some information on hits/misses etc.
* #34 : Errors are now const
# 2.1.0 (October 2020)
## API changes
* `SetCacheSizeLimit(limit int)` a call was contributed to set a cache limit. #35
# 2.0.0 (July 2020)
## Fixes #29, #30, #31
## Behavioural changes
* `Remove(key)` now also calls the expiration callback when it's set
* `Count()` returns zero when the cache is closed
## API changes
* `SetLoaderFunction` allows you to provide a function to retrieve data on missing cache keys.
* Operations that affect item behaviour such as `Close`, `Set`, `SetWithTTL`, `Get`, `Remove`, `Purge` now return an error with standard errors `ErrClosed` an `ErrNotFound` instead of a bool or nothing
* `SkipTTLExtensionOnHit` replaces `SkipTtlExtensionOnHit` to satisfy golint
* The callback types are now exported