Update to version 0.7.12.0

Integrate delayedCacheIO into all URL resource requests

Integrate fixed fee average into CLI. Add option for number of blocks…

… to collect for fee average.

Update version to 0.7.9.0

Update version to 0.7.9.0

Update GHC version in stack configuration to version 15.12

Update to version 0.7.7.0

Update to version 0.7.7.0

Apply a bunch of hlint suggestions

Better device matching for Vnish devices