v2.0.0

Breaking changes

• RecoreFX now targets .NET 5.0
• Removes IReadOnlyDictionaryExtensions, which contained two overloads of GetValueOrDefault(), preferring the now-standard method
• Also removes IDictionaryExtensions.GetValueOrDefault<TKey, TValue>(Dictionary<TKey, TValue>, TKey), which is no longer needed to resolve ambiguity
• Of<T>.Value is now init-only
• Token and Ciphertext<THash> are now record types instead of subtypes of Of<string>

New features

• The API now has type annotations for nullable references
• Add Apply() and ApplyAsync()
• Add Equals() overloads with IEqualityComparer<T> for Optional<T>, Either<TLeft, TRight>, and Result<TValue, TResult>
• Add ToAsyncEnumerable<T>(Task<IEnumerable<T>>) and ToAsyncEnumerable(IEnumerable<Task<T>>)

Bug fixes

• Fixed the equality and comparison methods of Token, MappedComparer, and MappedEqualityComparer so that they no longer throw NullReferenceException when passed null as an argument
• Fixed Of<T>.ToString() not to throw NullReferenceException when the underlying value is null