Make Landscape happy
Implement Default and Global Config Source
Implement Project config source
Remove unnecessary config
Refactor env
Implement ConfigCOmmentSource
Remove ambiguous variable name 'env'
Implement ConfigContainer
Implement ConfigDictSource
Change spec of Liter.__init__
Move policy tests to the integration tests directory
Roll back the location of the test for AbstractPolicy
Move unit tests
Make integration test happy
Rename integration test
Merge pull request #3 from Kuniwak/implement-config

Implement a config system