## 1.5.0
* only catch StandardError and not Exception
## 1.4.3
* After overriding the REQUEST_METHOD, store the original request method in "rack.methodoverride.original_method"
## 1.4.1
* Ignore invalid Expires date as per RFC
## 1.4.0
* Not invalidating the cache for preflight CORS request
## 1.3.1 / October 2015
* Support Ruby 1.9
## 1.3 / Octorber 2015
* Ruby 2.0 only
* Gracefully degrade when cache store goes offline
* allow_reload/revalidate is not enabled by default
* Make Rack::Cache multithread friendly
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