Attempt to detect circular dependencies in operations
Merge branch 'develop' into feature/detect-operation-cyclic-dependencies

Conflicts:
	Zinc-ObjC.xcodeproj/project.pbxproj
Merge branch 'develop' into feature/detect-operation-cyclic-dependencies
Adding additional logging to assertion
Clarifying cycle detection alg
Adding a few tests
Merge branch 'develop' into feature/detect-operation-cyclic-dependencies
Merge pull request #73 from mindsnacks/feature/detect-operation-cyclic-dependencies

Attempt to detect circular dependencies in operations