Prettify error when can't connect to the docker daemon
Small cleanup in imager#build_image
Don't fail if we can't find a commit date for a file
Version bump
Using git to get modified time of harpoon.yml files
Don't complain about using sigkill if didn't use sigkill
Version Bump
Adding a tests for _errors functionality on HarpoonError
Initial work to seperate out normalising yaml from using options
Starting to write tests for option_spec.spec_base
Writing more spec_base tests
String_spec tests
Combining dictof and dictionary_spec
Tests for create_spec
Adding some more base specs
Changing harpoon image yaml config slightly
Adding tests for the validators
Fixing MemoizedProperty
Started writing tests for harpoon_spec