Vouch v0.1.0

First release.

• .Should() for objects, bools, numbers, nullable numbers, strings, dates (DateTime, DateTimeOffset, DateOnly), collections, dictionaries and delegates.
• BeEquivalentTo compares member by member, any order unless WithStrictOrdering, and lists every difference with its member path.
• Throw<T>, ThrowAsync<T>, NotThrow, NotThrowAsync, with WithMessage, WithParameterName and Which.
• .And, .Which and .Subject chains.
• An optional reason string on most assertions, appended to the failure message.
• One VouchException type. Vouch references no test framework. Failures show as plain test failures in xUnit v2, xUnit v3, NUnit and MSTest.
• No runtime dependencies. Targets net8.0 and net10.0.