Reused test data provider.
Merge branch 'feature-compare-to-implementation' of https://github.com/axlm/Utility into feature-compare-to-implementation

* 'feature-compare-to-implementation' of https://github.com/axlm/Utility:
  New builder.
  Added private no-arg constructors.
  Minor formatting change.
  Expanded documentation. More tests for CompareTo.