v2.0.0 Fine Tuning

What's Changed

• Add comparison features to the value object by @geoffreyvanwyk in #17
• Explain comparison and equality checking in README by @geoffreyvanwyk in #18
• Remove the value() method by @geoffreyvanwyk in #19
• tests: construtor argument is required by @geoffreyvanwyk in #20
• 14 add explicit test for or explain in comment usage of null byte in nonnumeric strings test data provider by @geoffreyvanwyk in #21
• docs: explain the segments of the identity number by @geoffreyvanwyk in #23
• ci: only accept 100% code coverage by @geoffreyvanwyk in #24
• feat: add equals method by @geoffreyvanwyk in #25
• Contributing Guide by @geoffreyvanwyk in #26

Full Changelog: v1.0.0...v2.0.0