Updated dependencies. Removed unused code.
Removed TrackingCodeErrorRepository.
Reinstated ClassInstabilityRule.
Created HiddenTypeDependencyRule and added tests.
Removed MemberNode.
Merge branch master.
Included fields when checking for hidden dependencies.
Added TypeMustBeDeclaredInNamespaceRule and LockingOnWeakIdentityObjectRule with tests.
Merge branch master.

Conflicts:
	ArchiMetrics.CodeReview.Rules/ArchiMetrics.CodeReview.Rules.csproj