Fix setup.py due to moving package from src to project root
Redesign the adapter interface
Remove core module
Rename adapters to storages
Rewrite Local adapter as FileSystemStorage
Remove memory storage
Extract param types to separate directives in docstrings
Remove Amazon S3 storage
Remove old functional test case for storages
Merge unit and functional test folders
Fix interface tests
Remove unit/functional test markers
Refactor exceptions and their tests
Make compat module private
Remove boto from tox dependencies
Fix path to package source in tox config
Simplify tox config