Create basic disk entity without tests
Merge branch 'master' into feature/entities/disk

Conflicts:
	Haneke.xcodeproj/project.pbxproj
Provide cancelling on disk entity
Merge branch 'master' into feature/entities/disk

Conflicts:
	Haneke.xcodeproj/project.pbxproj
Add tests to disk fetcher
Updates after pull request suggestions
Merge pull request #83 from Haneke/feature/entities/disk

Feature/entities/disk