3.4.0

Enhancement: Backend now utilizes Hiera's context.interpolate function to add interpolation of values in results.

Bugfix: nil values returned from HTTP lookup caused exception when trying to dig into the hash - this behaviour has been corrected to return :not_found in this scenario. See comment on #66 (#69)

3.3.1 (3.3.0 pulled due to forge package error)

Feature: New parameters dig and dig_value give greater control over dealing with APIs that return data in different formats by allowing hiera-http to dig down into the returned data hash to find the corresponding key. Read more about this feature in the documentation (#66)
Enhnacement: Hiera-HTTP can now distinguish between a nil value and an undefined value. If a hash contains the key for the lookup with no data, this is assumed to be a key set to nil and is returned to Hiera as nil. Where there is no key found this is assumed to be undefined and the context.not_found() method of Hiera is called. This allows data to contain keys explicitly set to nil.
Enhancement: Better caching of the lookuphttp object in between requests.

Feature: Added the tags __MODULE__, __PARAMETER__ and __CLASS__ for URL interpolation
Bugfix: lookup_http was still being called even when Hiera had a cached value for the lookup path

Fix: Hiera 5 no longer allows us to pass %{key} through from the configuration to be interpolated by the backend, as was documented examples for hiera-http 2.x - to get around this issue the keyword __KEY__ can be used in URI paths to interpolate the key into the URL (#53)
Fix: URI Escaping of paths with parameters (&foo=bar) caused the parameters to be dropped (#53) this has now been fixed.