semver v2.2.0

A minor release to improve comparison. Existing comparison methods and operators were confusing (#15, #26) and had bugs (#39, #53, #69).

• New ComparePrecedenceTo(SemVersion), PrecedenceEquals(Semver), and static ComparePrecedence(SemVersion, SemVersion) and PrecedenceEquals(SemVersion, SemVersion) methods for comparing precedence
• New CompareSortOrderTo(SemVersion) and static CompareSortOrder(SemVersion, SemVersion) methods for comparing sort order
  • Use existing Equals(SemVersion) and Equals(SemVersion, SemVersion) to compare sort order equality
• New PrecedenceComparer and SortOrderComparer static properties
  • Provide a comparer that implements IEqualityComparer<SemVersion> and IComparer<SemVersion> to compare by precedence and sort order respectively
  • These can be used for sorting, binary search, and using SemVersion as a dictionary key
• Marked Compare(SemVersion, SemVersion), CompareByPrecedence(SemVersion), CompareTo(SemVersion), CompareTo(object), and PrecedenceMatches(SemVersion) obsolete
• Marked comparison operators obsolete (#53)